diff --git a/.gitignore b/.gitignore
index c820964b..84a06467 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 vendor
-composer.lock
+/composer.lock
 *.sh
 script/*
 
@@ -10,3 +10,4 @@ script/*
 .env
 /.php_cs
 /.php_cs.cache
+/test.php
diff --git a/README.md b/README.md
index 78453583..3f951e4e 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 Bigcommerce API Client
 ======================
 
-PHP client for connecting to the Bigcommerce V2 REST API.
+PHP client for connecting to the Bigcommerce V2 and V3 REST API.
 
 To find out more, visit the official documentation website:
 http://developer.bigcommerce.com/
@@ -31,10 +31,10 @@ Installation
 ------------
 
 Use the following Composer command to install the
-API client from [the Bigcommerce vendor on Packagist](https://packagist.org/packages/bigcommerce/api):
+API client from [the Bigcommerce vendor on Packagist](https://packagist.org/packages/naveenrajbu/bigcommerce-api-php-v3):
 
 ~~~shell
- $ composer require bigcommerce/api
+ $ composer require naveenrajbu/bigcommerce-api-php-v3
  $ composer update
 ~~~
 
@@ -56,6 +56,492 @@ into the scope with the following namespace declaration:
 use Bigcommerce\Api\Client as Bigcommerce;
 ~~~
 
+V3 Update - *NEW
+---------
+This update is on the development with `Backward Compatibility` and can be easily customised on future version releases. Feel free to add more features and create issues.
+
+`configureBasicAuth` is Completely removed now you can only configure using `auth_token, client_id and store_hash`
+
+Now you can set the version on Configuration and can be overridden anywhere in the code.
+~~~php
+Bigcommerce::configure(array(
+    'client_id' => 'xxxxxxxxxxxxxxxxxxxxxx',
+    'auth_token' => 'xxxxxxxxxxxxxxxxxxxxxxx',
+    'store_hash' => 'xxxxxxxxx',
+    'version' => 'v3' //optional By Default set as 'v2'
+));
+
+//If you don't want to set version by default, you can always set it in the method.
+
+$brands = Bigcommerce::getBrands([],"v3");
+
+foreach($brands as $brand){
+    echo $brand->name."\n";
+}
+~~~
+As of now, Only `Carts, Wishlists, Catalog\products and Catlalog\brands support 'v3'` other APIs are still in development will be added here once it is completed, Meanwhile `You can still use 'v2' features without any issues`.
+
+Set 'v3' by default if you're only using 'v3' APIs
+
+All 'v3' methods has `$version` parameter which can be used if you didn't set version 'v3' as default version.
+
+All the 'Get' Methods has `$filter = array()` if applicable to set query parameters
+
+Products(V2 and V3)
+------------
+You can do all the functions of Products and More...
+
+~~~php
+Bigcommerce::configure(array(
+    'client_id' => 'xxxxxxxxxxxxxxxxxxxxxx',
+    'auth_token' => 'xxxxxxxxxxxxxxxxxxxxxxx',
+    'store_hash' => 'xxxxxxxxx',
+    'version' => 'v3' //optional By Default set as 'v2'
+));
+
+$products = Bigcommerce::getProducts(); //getProducts($filter = array(), $version = null);
+
+foreach($products as $item){
+    echo $item->name."\n";
+    $videos = $item->videos();
+}
+
+// Single Product
+// 'Product' Object has create(), update(), delete() functions and more explained in below examples
+
+$product = Bigcommerce::getProduct(1);
+$product->name = "Test 1";
+$product->update();
+
+$product->delete();
+
+
+$variants = $product->variants();
+//or 
+Bigcommerce::getProduct(1)->variants(123);
+
+
+//To get Meta fields for a Single Variant
+$variant_metafield = Bigcommerce::getProducts(1)->variants(123)->meta_fields();
+
+
+$variant_metafield->delete();
+//or 
+Bigcommerce::getProduct(1)->variants(123)->meta_fields(1)->delete();
+~~~
+**The 'Product' Object has following member functions**
+
+**Member Functions that works only on 'v3'**
+All the 'v3' Resource Class has `create(), update() and delete()` functions
+~~~php
+$product = Bigcommerce::getProduct(1);
+
+
+// Delete bulk pricing id 1 for product id 1
+$product->bulk_pricing_rules(1)->delete();
+
+
+// Retrieve all Bulk Pricing rules for product id 1
+$bulk = $product->bulk_pricing_rules();
+
+
+$complex_rules = $product->complex_rules();
+// or Bigcommerce::getProductComplexRules($product_id);
+
+
+$variants = $product->variants();
+// or Bigcommerce::getProductVariants($product_id);
+
+
+$variant = $product->variant(1);
+
+//'ProductVariant' Object has meta_fields(), create_image(), create(), update(), delete() functions
+
+$variant->create_image("https://image.jpg");
+// ProductVariantObject->create_image($image_url);
+
+
+// 'ProductVariantMetafield' object has create(), update(), delete() functions
+
+$variant_metafield = $variant->meta_fields();
+$variant_metafield->delete();
+
+
+// ProductObject->options() works on both 'v2' and 'v3' but ProductObject->options(1)->values() works only on 'v3'
+// So, By default ProductObject->options($version = "v3") set to version 'v3'
+
+$options = $product->options("v2");
+$option_values = $product->options("v3")->values();
+$option_value = $product->options("v3")->values(1);
+$option_value->delete();
+~~~
+
+**Member Functions that works on both 'v2' and 'v3'**
+Below are the function that works on both `v2` and `v3` versions
+you can override the default version by setting it in functions like: `Bigcommerce::getProduct(1)->brand("v3");`
+
+~~~php
+$product = Bigcommerce::getProduct(1);
+
+$brand = $product->brand();
+
+$image = $product->images(1)->delete();
+// or Bigcommerce::getProductImage(1);
+
+
+$videos = $product->videos();
+// or Bigcommerce::getProductVideos();
+
+$video = $product->videos(1);
+// or Bigcommerce::getProductVideo(1);
+
+$video->name = "Updated Video";
+// or Bigcommerce::updateProductVideo($product_id, $video_id, $array);
+
+$video->update(); // or $video->delete();
+// or Bigcommerce::deleteProductVideo($product_id, $video_id);
+
+
+$custom_fields = $product->custom_fields();
+// or Bigcommerce::getProductCustomFields($product_id);
+
+
+$reviews = $product->reviews();
+// or Bigcommerce::getProductReviews($product_id);
+~~~
+
+**Member Functions that works only on 'v2'**
+Some functions may return empty data since 'v2' has been abandoned by Bigcommerce
+~~~php
+$product = Bigcommerce::getProduct(1);
+
+$skus = $product->skus();
+$rules = $product->rules();
+$configurable_rules = $product->configurable_rules();
+$discount_rules = $product->discount_rules();
+$option_set = $product->option_set();
+$tax_class = $product->tax_class();
+~~~
+**Product Modifiers and Product Meta Fields are still in Development**
+
+Carts(V3)
+------------
+you can do almost all the functions in cart.
+
+**Get Cart by Cart Id**: `getCart($id, $version = null);`
+* $id = String Cart Id
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+Bigcommerce::configure(array(
+    'client_id' => 'xxxxxxxxxxxxxxxxxxxxxx',
+    'auth_token' => 'xxxxxxxxxxxxxxxxxxxxxxx',
+    'store_hash' => 'xxxxxxxxx',
+    'version' => 'v3'
+));
+$cart = Bigcommerce::getCart();
+
+echo $cart->id;
+
+//for this documentation, I'll use the above example
+//$version variable available for only methods that use 'v3', you can use older functions as it was without '$version' variable
+
+
+//or
+
+Bigcommerce::configure(array(
+    'client_id' => 'xxxxxxxxxxxxxxxxxxxxxx',
+    'auth_token' => 'xxxxxxxxxxxxxxxxxxxxxxx',
+    'store_hash' => 'xxxxxxxxx'
+));
+
+$cart = Bigcommerce::getCart("v3");
+
+echo $cart->id;
+~~~
+**Create Cart**: `createCart($object, $version = null);`
+* $object = Array | Object 
+* $version = (Optional) String "v2", "v3", ..
+~~~php
+$cart = array(
+    "customer_id" => 1,
+    "line_items" => array(
+        array(
+            "quantity" => 1,
+            "product_id" => 1,
+            "variant_id" => 2
+        )
+    )
+);
+
+Bigcommerce::createCart($cart); //or Bigcommerce::createCart($cart,"v3");
+
+//or
+
+$cart = new Bigcommerce\Api\Resources\Cart();
+$cart->customer_id = 1;
+$cart->line_items = array(
+    array(
+        "quantity" => 1,
+        "product_id" => 1,
+        "variant_id" => 2
+    )
+);
+$cart->create(); // CartObject->create($version = 'v3'); $version (Optional)
+~~~
+**Update Cart**: `updateCartCustomerId($cart_id, $customer_id, $version = null);`
+
+Note: Only `Customer Id` can be updated by update cart api
+* $cart_id = String Cart Id
+* $customer_id = Int Customer Id
+* $version = (Optional) String "v2", "v3", ..
+ ~~~php
+Bigcommerce::updateCartCustomerId("xxxxxxxxx",1);
+ 
+ //or
+ 
+ $cart = Bigcommerce::getCart("xxxxxxxxxxx");
+ $cart->update(41) // CartObject->update($customer_id, $version = 'v3'); $version (Optional)
+ ~~~
+**Delete Cart**: `deleteCart($cart_id, $version = null);`
+* $cart_id = String Cart Id
+~~~php
+Bigcommerce::deleteCart("xxxxxxxxx",1);
+ 
+ //or
+ 
+ $cart = Bigcommerce::getCart("xxxxxxxxxxx");
+ $cart->delete() // CartObject->delete($version = 'v3'); $version (Optional)
+ ~~~
+
+**Add Cart Items**: `createCartLineItems($id, $object, $filter = array(), $version = null);`
+* $id = String Cart Id
+* $object = Array|Object 
+* $filter = (Optional) Array Example ['include'=>'redirect_urls']
+~~~php
+$items = array(
+    "line_items" => array(
+        array(
+            "quantity" => 1,
+            "product_id" => 1,
+            "variant_id" => 2
+        ),
+        array(
+            "quantity" => 1,
+            "product_id" => 2,
+            "variant_id" => 3
+        )
+    )
+);
+
+Bigcommerce::createCartLineItems("xxxxxxxxx",$items);
+ 
+ //or
+ 
+ $cart = Bigcommerce::getCart("xxxxxxxxxxx");
+ $cart->addItems($items) // CartObject->addItems($items, $filter = array(), $version = 'v3'); $filter, $version (Optional)
+ ~~~
+
+**Update Cart Item**: `updateCartLineItem($cart_id, $line_item_id, $object, $filter = array(), $version = null);`
+* $cart_id = String Cart Id
+* $line_item_id = String Line Item Id
+* $object = Array|Object 
+* $filter = (Optional) Array Example ['include'=>'redirect_urls']
+~~~php
+$item = array(
+    "line_items" => array(
+        "quantity" => 1,
+        "product_id" => 1,
+        "variant_id" => 2
+    )
+);
+
+Bigcommerce::updateCartLineItem("xxxxxxxxx","xxxxxxxxx",$item);
+ ~~~
+
+**Delete Cart Item**: `deleteCartLineItem($cart_id, $line_item_id, $version = null);`
+* $cart_id = String Cart Id
+* $line_item_id = String Line Item Id
+~~~php
+Bigcommerce::deleteCartLineItem("xxxxxxxxx","xxxxxxxxx");
+ ~~~
+ 
+Brands (V2 and V3) 
+----------------------
+you can use both 'v2' and 'v3' in Brands and I'm trying to do the same for all new versions.
+
+**Get All Brands**: `getBrands($filter = array(), $version = null);`
+* $filter = Array filter options refer Bigcommerce documentation for more.
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+Bigcommerce::configure(array(
+    'client_id' => 'xxxxxxxxxxxxxxxxxxxxxx',
+    'auth_token' => 'xxxxxxxxxxxxxxxxxxxxxxx',
+    'store_hash' => 'xxxxxxxxx'
+));
+// By default version will be 'v2'
+// API url will be https://api.bigcommerce.com/stores/{store_hash}/v2/brands
+$brands = Bigcommerce::getBrands();
+
+//or
+
+Bigcommerce::configure(array(
+    'client_id' => 'xxxxxxxxxxxxxxxxxxxxxx',
+    'auth_token' => 'xxxxxxxxxxxxxxxxxxxxxxx',
+    'store_hash' => 'xxxxxxxxx',
+    'version' => 'v3' \\ Optional
+));
+
+// API url will be https://api.bigcommerce.com/stores/{store_hash}/v3/catalog/brands
+$brands = Bigcommerce::getBrands([],"v3");
+~~~
+**Get Brand by Brand Id:** `getBrand($id, $version = null);`
+* $id = Int Brand Id.
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+$brand = Bigcommerce::getBrand(1);
+//or
+$brand = Bigcommerce::getBrand(1,"v3");
+
+echo $brand->name;
+~~~
+**Create Brand:** `createBrand($object, $version = null);`
+* $object = Array|Object API Payload.
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+$brand = array(
+    "name" => "test"
+);
+$brand = Bigcommerce::createBrand($brand,'v3');
+//or
+$brand = new Bigcommerce\Api\Resources\Brand();
+$brand->name = "test";
+$brand->create(); // BrandObject->create($version = null); $version (Optional)
+~~~
+**Update Brand:** `createBrand($id, $object, $version = null);`
+* $id = Int Brand Id.
+* $object = Array|Object
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+$brand = array(
+    "name" => "test"
+);
+$brand = Bigcommerce::updateBrand(1, $brand, 'v3');
+//or
+$brand = Bigcommerce::getBrand(1);
+$brand->name = "test";
+$brand->update(); // BrandObject->update($version = null); $version (Optional)
+~~~
+**Delete Brand:** `deleteBrand($id, $version = null);`
+* $id = Int Brand Id.
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+Bigcommerce::deleteBrand(1);
+//or
+$brand = Bigcommerce::getBrand(1);
+$brand->delete(); // BrandObject->delete($version = null); $version (Optional)
+~~~
+**Delete All Brand:** `deleteAllBrands($version = null);`
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+Bigcommerce::deleteAllBrands();
+~~~
+**Get All Brand Meta Fields (Only on 'v3'):** `getBrandMetafields($id, $filter = array(), $version = null);`
+* $id = Int Brand Id
+* $filter = (Optional) Array|Object
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+Bigcommerce::getBrandMetafields(1, array(), 'v3');
+~~~
+**Get Brand Meta Field by Id (Only on 'v3'):** `getBrandMetafield($brand_id, $metafield_id, $filter = array(), $version = null);`
+* $brand_id = Int Brand Id
+* $metafield_id = Int Brand Meta Field Id
+* $filter = (Optional) Array|Object
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+Bigcommerce::getBrandMetafield(1, 1, array(), 'v3');
+~~~
+**Create Brand Meta Field (Only on 'v3'):** `createBrandMetafield($id, $object, $version = null);`
+* $id = Int Brand Id
+* $object = Array|Object
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+$metaField = array(
+    "permission_set" => "app_only",
+    "namespace" => "App Namespace",
+    "key" => "location_id",
+    "value" => "Shelf 3, Bin 5",
+);
+
+Bigcommerce::createBrandMetafield(1, $metaField, 'v3');
+~~~
+
+**Update Brand Meta Field (Only on 'v3'):** `updateBrandMetafield($brand_id, $metafield_id, $object, $version = null);`
+* $brand_id = Int Brand Id
+* $metafield_id = Int Brand Meta Field Id
+* $object = Array|Object
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+$metaField = array(
+    "permission_set" => "app_only",
+    "namespace" => "App Namespace",
+    "key" => "location_id",
+    "value" => "Shelf 3",
+);
+
+Bigcommerce::updateBrandMetafield(1, 1, $metaField, 'v3');
+~~~
+
+**Delete Brand Meta Field (Only on 'v3'):** `updateBrandMetafield($brand_id, $metafield_id, $version = null);`
+* $brand_id = Int Brand Id
+* $metafield_id = Int Brand Meta Field Id
+* $version = (Optional) String "v2", "v3", ..  
+~~~php
+Bigcommerce::deleteBrandMetafield(1, 1, 'v3');
+~~~
+
+Wishlists (Only on 'v3')
+-----------
+The wishlists has following Functions
+~~~php
+$wishlists = Bigcommerce::getWishlists();
+
+foreach($wishlists as $item){
+    echo $item->name;
+}
+
+$items = array(
+    "items" = array(
+        array(
+            "product_id" => 1,
+            "variant_id" => 2
+        )
+    )
+);
+
+Bigcommerce::createWishlist($items);
+
+//or
+
+$wishlistObject = new Bigcommerce\Api\Resources\Wishlist();
+$wishlistObject->name = "New List";
+$wishlistObject->items = $items['items'];
+$wishlistObject->create();
+
+$wishlist = Bigcommerce::getWishlist(1);
+$wishlist->name = "Test Wishlist";
+$wishlist->update();                          \\ or Bigcommerce::updateWishlist($wishlist_id, $array);
+
+$wishlist->addItems($items);                   \\ or Bigcommerce::createWishlistItems($wishlist_id, $items);
+
+$wishlist->delete();
+~~~
+
+That's all for now. I'll update for other APIs Continuously. **Feel free to Pull and Merge for other APIs**
+
+I'll publish this repo on composer for easy Installation
+
+**You can use all the features and Methods Below**
+
 Configuration
 -------------
 
@@ -90,6 +576,7 @@ Bigcommerce::configure(array(
 ~~~
 
 ### Basic Auth (deprecated)
+**Update - Totally Removed**
 ~~~php
 Bigcommerce::configure(array(
 	'store_url' => 'https://store.mybigcommerce.com',
diff --git a/composer.json b/composer.json
index 52c15bbb..c1567d14 100644
--- a/composer.json
+++ b/composer.json
@@ -1,5 +1,5 @@
 {
-    "name": "bigcommerce/api",
+    "name": "naveenrajbu/bigcommerce-api-php-v3",
     "type": "library",
     "description": "Enables PHP applications to communicate with the Bigcommerce API.",
     "keywords": [
@@ -15,6 +15,11 @@
         {
             "name": "Bigcommerce",
             "homepage": "http://www.bigcommerce.com"
+        },
+        {
+            "name": "Naveen Raj",
+            "homepage": "https://github.com/naveenrajbu/",
+            "email": "nvenrj@gmail.com"
         }
     ],
     "require": {
@@ -29,7 +34,7 @@
     },
     "autoload": {
         "psr-0": {
-            "Bigcommerce": "src/"
+            "Bigcommerce\\Api": "src/"
         }
     },
     "autoload-dev": {
diff --git a/src/Bigcommerce/Api/Client.php b/src/Bigcommerce/Api/Client.php
index 00eb60fa..a7d95790 100644
--- a/src/Bigcommerce/Api/Client.php
+++ b/src/Bigcommerce/Api/Client.php
@@ -45,10 +45,18 @@ class Client
      */
     private static $resource;
 
+    /**
+     * version name
+     *
+     * @var string
+     */
+    public static $version;
+
     /**
      * API path prefix to be added to store URL for requests
      *
      * @var string
+     * @deprecated
      */
     private static $path_prefix = '/api/v2';
 
@@ -62,9 +70,10 @@ class Client
     private static $store_hash;
     private static $auth_token;
     private static $client_secret;
-    private static $stores_prefix = '/stores/%s/v2';
+    private static $stores_prefix = '/stores/%s/';
     private static $api_url = 'https://api.bigcommerce.com';
     private static $login_url = 'https://login.bigcommerce.com';
+    private static $available_versions = array(null, "v2", "v3");
 
     /**
      * Configure the API client with the required settings to access
@@ -72,14 +81,17 @@ class Client
      *
      * Accepts OAuth and (for now!) Basic Auth credentials
      *
+     * configure using Basic Auth credentials doesn't support anymore
+     *
      * @param array $settings
+     * @throws Exception
      */
     public static function configure($settings)
     {
         if (isset($settings['client_id'])) {
             self::configureOAuth($settings);
         } else {
-            self::configureBasicAuth($settings);
+            throw new Exception("'client_id' must be provided");
         }
     }
 
@@ -93,7 +105,7 @@ public static function configure($settings)
      * - store_hash
      *
      * @param array $settings
-     * @throws \Exception
+     * @throws Exception
      */
     public static function configureOAuth($settings)
     {
@@ -111,6 +123,16 @@ public static function configureOAuth($settings)
 
         self::$client_secret = isset($settings['client_secret']) ? $settings['client_secret'] : null;
 
+        if (isset($settings['version'])) {
+            if (in_array($settings['version'], self::$available_versions)) {
+                self::$version = (!is_null($settings['version']))? $settings['version']:'v2';
+            } else {
+                throw new Exception("'version' not available");
+            }
+        }
+
+        self::$version = isset($settings['version']) ? $settings['version'] : "v2";
+
         self::$api_path = self::$api_url . sprintf(self::$stores_prefix, self::$store_hash);
         self::$connection = false;
     }
@@ -125,7 +147,8 @@ public static function configureOAuth($settings)
      * - api_key
      *
      * @param array $settings
-     * @throws \Exception
+     * @throws Exception
+     * @deprecated
      */
     public static function configureBasicAuth(array $settings)
     {
@@ -219,11 +242,12 @@ private static function connection()
     {
         if (!self::$connection) {
             self::$connection = new Connection();
-            if (self::$client_id) {
-                self::$connection->authenticateOauth(self::$client_id, self::$auth_token);
-            } else {
-                self::$connection->authenticateBasic(self::$username, self::$api_key);
-            }
+            self::$connection->authenticateOauth(self::$client_id, self::$auth_token);
+//            if (self::$client_id) {
+//                self::$connection->authenticateOauth(self::$client_id, self::$auth_token);
+//            } else {
+//                self::$connection->authenticateBasic(self::$username, self::$api_key);
+//            }
         }
 
         return self::$connection;
@@ -254,13 +278,20 @@ public static function setConnection(Connection $connection = null)
      *
      * @param string $path api endpoint
      * @param string $resource resource class to map individual items
+     * @param null $version
      * @return mixed array|string mapped collection or XML string if useXml is true
+     * @throws Exception
      */
-    public static function getCollection($path, $resource = 'Resource')
+    public static function getCollection($path, $resource = 'Resource', $version = null)
     {
-        $response = self::connection()->get(self::$api_path . $path);
-
-        return self::mapCollection($resource, $response);
+        $temp_version = (!is_null($version) and in_array($version, self::$available_versions))?$version:self::$version;
+        $path = ($resource !== "Resource")?self::getUrl($resource, $temp_version).$path : $path;
+        $response = self::connection()->get(self::$api_path .$temp_version. $path);
+        if (isset($response->data)) {
+            return self::mapCollection($resource, $response->data);
+        } else {
+            return self::mapCollection($resource, $response);
+        }
     }
 
     /**
@@ -268,30 +299,74 @@ public static function getCollection($path, $resource = 'Resource')
      *
      * @param string $path api endpoint
      * @param string $resource resource class to map individual items
+     * @param null $version
      * @return mixed Resource|string resource object or XML string if useXml is true
+     * @throws Exception
      */
-    public static function getResource($path, $resource = 'Resource')
+    public static function getResource($path, $resource = 'Resource', $version = null)
     {
-        $response = self::connection()->get(self::$api_path . $path);
+        $temp_version = (!is_null($version) and in_array($version, self::$available_versions))?$version:self::$version;
+        $path = ($resource !== "Resource")?self::getUrl($resource, $temp_version).$path : $path;
 
-        return self::mapResource($resource, $response);
+        $response = self::connection()->get(self::$api_path .$temp_version. $path);
+
+        if (isset($response->data)) {
+            return self::mapResource($resource, $response->data);
+        } else {
+            return self::mapResource($resource, $response);
+        }
+    }
+
+    /**
+     * Get url from Resource Class if exist.
+     *
+     * @param string $resource resource class to map individual items
+     * @param $version
+     * @return mixed Resource|string resource object or XML string if useXml is true
+     * @throws Exception
+     */
+
+    public static function getUrl($resource, $version)
+    {
+        $baseResource = __NAMESPACE__ . '\\' . $resource;
+        $resource_namespace = (class_exists($baseResource)) ? $baseResource : 'Bigcommerce\\Api\\Resources\\' . $resource;
+        $object = new $resource_namespace();
+        if (isset($object->urls)) {
+            if (array_key_exists($version, $object->urls)) {
+                return $object->urls[$version];
+            } else {
+                throw new Exception($version." not available for this resource");
+            }
+        } else {
+            return "";
+        }
     }
 
     /**
      * Get a count value from the specified endpoint.
      *
      * @param string $path api endpoint
+     * @param string $resource
+     * @param null $version
      * @return mixed int|string count value or XML string if useXml is true
+     * @throws Exception
      */
-    public static function getCount($path)
+    public static function getCount($path, $resource = "Resource", $version = null)
     {
-        $response = self::connection()->get(self::$api_path . $path);
+        $temp_version = (!is_null($version) and in_array($version, self::$available_versions))?$version:self::$version;
+        $path = ($resource !== "Resource")?self::getUrl($resource, $temp_version).$path : $path;
 
-        if ($response == false || is_string($response)) {
-            return $response;
-        }
+        $response = self::connection()->get(self::$api_path .$temp_version. $path);
 
-        return $response->count;
+        if (self::$version == "v2") {
+            if ($response == false || is_string($response)) {
+                return $response;
+            }
+
+            return $response->count;
+        } else {
+            return $response->meta->pagination->total;
+        }
     }
 
     /**
@@ -299,15 +374,19 @@ public static function getCount($path)
      *
      * @param string $path api endpoint
      * @param mixed $object object or XML string to create
+     * @param string $resource
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function createResource($path, $object)
+    public static function createResource($path, $object, $resource = "Resource", $version = null)
     {
+        $temp_version = (!is_null($version) and in_array($version, self::$available_versions))?$version:self::$version;
         if (is_array($object)) {
             $object = (object)$object;
         }
-
-        return self::connection()->post(self::$api_path . $path, $object);
+        $path = ($resource !== "Resource")?self::getUrl($resource, $temp_version).$path : $path;
+        return self::connection()->post(self::$api_path .$temp_version. $path, $object);
     }
 
     /**
@@ -315,26 +394,35 @@ public static function createResource($path, $object)
      *
      * @param string $path api endpoint
      * @param mixed $object object or XML string to update
+     * @param string $resource
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function updateResource($path, $object)
+    public static function updateResource($path, $object, $resource = "Resource", $version = null)
     {
+        $temp_version = (!is_null($version) and in_array($version, self::$available_versions))?$version:self::$version;
         if (is_array($object)) {
             $object = (object)$object;
         }
-
-        return self::connection()->put(self::$api_path . $path, $object);
+        $path = ($resource !== "Resource")?self::getUrl($resource, $temp_version).$path : $path;
+        return self::connection()->put(self::$api_path .$temp_version. $path, $object);
     }
 
     /**
      * Send a delete request to remove the specified resource.
      *
      * @param string $path api endpoint
+     * @param string $resource
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function deleteResource($path)
+    public static function deleteResource($path, $resource = "Resource", $version = null)
     {
-        return self::connection()->delete(self::$api_path . $path);
+        $temp_version = (!is_null($version) and in_array($version, self::$available_versions))?$version:self::$version;
+        $path = ($resource !== "Resource")?self::getUrl($resource, $temp_version).$path : $path;
+        return self::connection()->delete(self::$api_path .$temp_version. $path);
     }
 
     /**
@@ -365,7 +453,6 @@ private static function mapCollection($resource, $object)
     private static function mapCollectionObject($object)
     {
         $class = self::$resource;
-
         return new $class($object);
     }
 
@@ -468,45 +555,65 @@ public static function getTime()
      * Returns the default collection of products.
      *
      * @param array $filter
+     * @param null $version
      * @return mixed array|string list of products or XML string if useXml is true
+     * @throws Exception
      */
-    public static function getProducts($filter = array())
+    public static function getProducts($filter = array(), $version = null)
     {
         $filter = Filter::create($filter);
-        return self::getCollection('/products' . $filter->toQuery(), 'Product');
+        return self::getCollection('' . $filter->toQuery(), 'Product', $version);
     }
 
     /**
      * Gets collection of images for a product.
      *
      * @param int $id product id
+     * @param array $filter
+     * @param null $version
      * @return mixed array|string list of products or XML string if useXml is true
+     * @throws Exception
      */
-    public static function getProductImages($id)
+    public static function getProductImages($id, $filter = array(), $version = null)
     {
-        return self::getCollection('/products/' . $id . '/images/', 'ProductImage');
+        $filter = Filter::create($filter);
+        return self::getCollection('/' . $id . '/images'.$filter->toQuery(), 'ProductImage', $version);
     }
 
     /**
      * Gets collection of custom fields for a product.
      *
      * @param int $id product ID
+     * @param null $version
      * @return array|string list of products or XML string if useXml is true
+     * @throws Exception
      */
-    public static function getProductCustomFields($id)
+    public static function getProductCustomFields($id, $version = null)
     {
-        return self::getCollection('/products/' . $id . '/custom_fields', 'ProductCustomField');
+        $temp_version = (is_null($version))?self::$version:$version;
+        if ($temp_version === "v2") {
+            return self::getCollection('/' . $id . '/custom_fields', 'ProductCustomField', $version);
+        } else {
+            return self::getCollection('/' . $id . '/custom-fields', 'ProductCustomField', $version);
+        }
     }
 
     /**
      * Returns a single custom field by given id
-     * @param  int $product_id product id
-     * @param  int $id custom field id
+     * @param int $product_id product id
+     * @param int $id custom field id
+     * @param null $version
      * @return Resources\ProductCustomField|bool Returns ProductCustomField if exists, false if not exists
+     * @throws Exception
      */
-    public static function getProductCustomField($product_id, $id)
+    public static function getProductCustomField($product_id, $id, $version = null)
     {
-        return self::getResource('/products/' . $product_id . '/custom_fields/' . $id, 'ProductCustomField');
+        $temp_version = (is_null($version))?self::$version:$version;
+        if ($temp_version === "v2") {
+            return self::getResource('/' . $product_id . '/custom_fields/' . $id, 'ProductCustomField', $version);
+        } else {
+            return self::getResource('/' . $product_id . '/custom-fields/' . $id, 'ProductCustomField', $version);
+        }
     }
 
     /**
@@ -514,22 +621,31 @@ public static function getProductCustomField($product_id, $id)
      *
      * @param int $product_id product id
      * @param mixed $object fields to create
+     * @param $version
      * @return Object Object with `id`, `product_id`, `name` and `text` keys
+     * @throws Exception
      */
-    public static function createProductCustomField($product_id, $object)
+    public static function createProductCustomField($product_id, $object, $version)
     {
-        return self::createResource('/products/' . $product_id . '/custom_fields', $object);
+        $temp_version = (is_null($version))?self::$version:$version;
+        if ($temp_version === "v2") {
+            return self::createResource('/' . $product_id . '/custom_fields', $object, 'ProductCustomField', $version);
+        } else {
+            return self::createResource('/' . $product_id . '/custom-fields', $object, 'ProductCustomField', $version);
+        }
     }
 
     /**
      * Gets collection of reviews for a product.
      *
      * @param $id
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function getProductReviews($id)
+    public static function getProductReviews($id, $version = null)
     {
-        return self::getCollection('/products/' . $id . '/reviews/', 'ProductReview');
+        return self::getCollection('/' . $id . '/reviews/', 'ProductReview', $version);
     }
 
     /**
@@ -538,11 +654,18 @@ public static function getProductReviews($id)
      * @param int $product_id product id
      * @param int $id custom field id
      * @param mixed $object custom field to update
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function updateProductCustomField($product_id, $id, $object)
+    public static function updateProductCustomField($product_id, $id, $object, $version = null)
     {
-        return self::updateResource('/products/' . $product_id . '/custom_fields/' . $id, $object);
+        $temp_version = (is_null($version))?self::$version:$version;
+        if ($temp_version === "v2") {
+            return self::updateResource('/' . $product_id . '/custom_fields/' . $id, $object, 'ProductCustomField', $version);
+        } else {
+            return self::updateResource('/' . $product_id . '/custom-fields/' . $id, $object, 'ProductCustomField', $version);
+        }
     }
 
     /**
@@ -550,11 +673,18 @@ public static function updateProductCustomField($product_id, $id, $object)
      *
      * @param int $product_id product id
      * @param int $id custom field id
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function deleteProductCustomField($product_id, $id)
+    public static function deleteProductCustomField($product_id, $id, $version = null)
     {
-        return self::deleteResource('/products/' . $product_id . '/custom_fields/' . $id);
+        $temp_version = (is_null($version))?self::$version:$version;
+        if ($temp_version === "v2") {
+            return self::deleteResource('/' . $product_id . '/custom_fields/' . $id, 'ProductCustomField', $version);
+        } else {
+            return self::deleteResource('/' . $product_id . '/custom-fields/' . $id, 'ProductCustomField', $version);
+        }
     }
 
     /**
@@ -573,22 +703,30 @@ public static function getProductsCount($filter = array())
      * Returns a single product resource by the given id.
      *
      * @param int $id product id
+     * @param null $version
      * @return Resources\Product|string
+     * @throws Exception
      */
-    public static function getProduct($id)
+    public static function getProduct($id, $version = null)
     {
-        return self::getResource('/products/' . $id, 'Product');
+        if (in_array($version, self::$available_versions)) {
+            return self::getResource('/' . $id, 'Product', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
      * Create a new product.
      *
      * @param mixed $object fields to create
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function createProduct($object)
+    public static function createProduct($object, $version = null)
     {
-        return self::createResource('/products', $object);
+        return self::createResource('', $object, 'Product', $version);
     }
 
     /**
@@ -596,32 +734,64 @@ public static function createProduct($object)
      *
      * @param int $id product id
      * @param mixed $object fields to update
+     * @param $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function updateProduct($id, $object, $version = null)
+    {
+        return self::updateResource('/' . $id, $object, 'Product', $version);
+    }
+
+    /**
+     * Update the product Batch.
+     *
+     * @param int $id product id
+     * @param mixed $object fields to update
+     * @param $version
      * @return mixed
+     * @throws Exception
      */
-    public static function updateProduct($id, $object)
+    public static function updateProducts($object, $version = null)
     {
-        return self::updateResource('/products/' . $id, $object);
+        return self::updateResource('', $object, 'Product', $version);
     }
 
     /**
      * Delete the given product.
      *
      * @param int $id product id
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function deleteProduct($id, $version = null)
+    {
+        return self::deleteResource('/' . $id, 'Product', $version);
+    }
+
+    /**
+     * Delete All products.
+     *
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function deleteProduct($id)
+    public static function deleteProducts($version = null)
     {
-        return self::deleteResource('/products/' . $id);
+        return self::deleteResource('', 'Product', $version);
     }
 
     /**
      * Delete all products.
      *
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function deleteAllProducts()
+    public static function deleteAllProducts($version = null)
     {
-        return self::deleteResource('/products');
+        return self::deleteResource('', 'Product', $version);
     }
 
     /**
@@ -719,6 +889,7 @@ public static function getOptionValues($filter = array())
      *
      * @param array $filter
      * @return array
+     * @throws Exception
      */
     public static function getCategories($filter = array())
     {
@@ -743,6 +914,7 @@ public static function getCategoriesCount($filter = array())
      *
      * @param int $id category id
      * @return Resources\Category
+     * @throws Exception
      */
     public static function getCategory($id)
     {
@@ -797,270 +969,664 @@ public static function deleteAllCategories()
      * The collection of brands.
      *
      * @param array $filter
+     * @param string $version
+     * @return array
+     * @throws Exception
+     */
+    public static function getBrands($filter = array(), $version = null)
+    {
+        $filter = Filter::create($filter);
+        if (in_array($version, self::$available_versions)) {
+            return self::getCollection($filter->toQuery(), 'Brand', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
+    }
+
+    /**
+     * The collection of Brand Metafields.
+     *
+     * @param int $id Brand Id
+     * @param array $filter
+     * @param string $version
      * @return array
+     * @throws Exception
      */
-    public static function getBrands($filter = array())
+    public static function getBrandMetafields($id, $filter = array(), $version = null)
     {
         $filter = Filter::create($filter);
-        return self::getCollection('/brands' . $filter->toQuery(), 'Brand');
+        if (in_array($version, self::$available_versions)) {
+            return self::getCollection('/'.$id.'/metafields'.$filter->toQuery(), 'Brand', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
      * The total number of brands in the collection.
      *
      * @param array $filter
+     * @param null $version
      * @return int
+     * @throws Exception
      */
-    public static function getBrandsCount($filter = array())
+    public static function getBrandsCount($filter = array(), $version = null)
     {
         $filter = Filter::create($filter);
-        return self::getCount('/brands/count' . $filter->toQuery());
+        if (in_array($version, self::$available_versions)) {
+            $path = ($version != "v3" and self::$version != "v3")?'/count':'';
+            return self::getCount($path . $filter->toQuery(), "Brand", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
      * A single brand by given id.
      *
      * @param int $id brand id
+     * @param string $version
+     * @return Resources\Brand
+     * @throws Exception
+     */
+    public static function getBrand($id, $version = null)
+    {
+        if (in_array($version, self::$available_versions)) {
+            return self::getResource("/".$id, 'Brand', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
+    }
+
+    /**
+     * A single brand Metafield by given brnad id and Metafield id.
+     *
+     * @param $brand_id
+     * @param $metafield_id
+     * @param array $filter
+     * @param string $version
      * @return Resources\Brand
+     * @throws Exception
      */
-    public static function getBrand($id)
+    public static function getBrandMetafield($brand_id, $metafield_id, $filter = array(), $version = null)
     {
-        return self::getResource('/brands/' . $id, 'Brand');
+        $filter = Filter::create($filter);
+        if (in_array($version, self::$available_versions)) {
+            return self::getResource("/".$brand_id.'/metafields/'.$metafield_id.$filter->toQuery(), 'Brand', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
      * Create a new brand from the given data.
      *
      * @param mixed $object
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function createBrand($object)
+    public static function createBrand($object, $version = null)
     {
-        return self::createResource('/brands', $object);
+        if (in_array($version, self::$available_versions)) {
+            return self::createResource('', $object, "Brand", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Update the given brand.
+     * Create a new brand from the given data.
      *
-     * @param int $id brand id
+     * @param $id
      * @param mixed $object
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function updateBrand($id, $object)
+    public static function createBrandMetafield($id, $object, $version = null)
     {
-        return self::updateResource('/brands/' . $id, $object);
+        if (in_array($version, self::$available_versions)) {
+            return self::createResource('/'.$id.'/metafields', $object, "Brand", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Delete the given brand.
+     * Update the given brand.
      *
      * @param int $id brand id
+     * @param mixed $object
+     * @param null|string $version
      * @return mixed
+     * @throws Exception
      */
-    public static function deleteBrand($id)
+    public static function updateBrand($id, $object, $version = null)
     {
-        return self::deleteResource('/brands/' . $id);
+        if (in_array($version, self::$available_versions)) {
+            return self::updateResource('/' . $id, $object, "Brand", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Delete all brands.
+     * Update single brand Metafield by given brand id and Metafield id.
      *
-     * @return mixed
+     * @param int $brand_id
+     * @param int $metafield_id
+     * @param array|object $object
+     * @param string $version
+     * @return Resources\Brand
+     * @throws Exception
      */
-    public static function deleteAllBrands()
+    public static function updateBrandMetafield($brand_id, $metafield_id, $object, $version = null)
     {
-        return self::deleteResource('/brands');
+        if (in_array($version, self::$available_versions)) {
+            return self::updateResource("/".$brand_id.'/metafields/'.$metafield_id, $object, 'Brand', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * The collection of orders.
+     * Delete the given brand.
      *
-     * @param array $filter
-     * @return array
+     * @param int $id brand id
+     * @param null $version
+     * @return mixed
+     * @throws Exception
      */
-    public static function getOrders($filter = array())
+    public static function deleteBrand($id, $version = null)
     {
-        $filter = Filter::create($filter);
-        return self::getCollection('/orders' . $filter->toQuery(), 'Order');
+        if (in_array($version, self::$available_versions)) {
+            return self::deleteResource('/' . $id, "Brand", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * The number of orders in the collection.
+     * Delete single brand Metafield by given brand id and Metafield id.
      *
-     * @param array $filter
-     * @return int
+     * @param int $brand_id
+     * @param int $metafield_id
+     * @param string $version
+     * @return Resources\Brand
+     * @throws Exception
      */
-    public static function getOrdersCount($filter = array())
+    public static function deleteBrandMetafield($brand_id, $metafield_id, $version = null)
     {
-        $filter = Filter::create($filter);
-        return self::getCount('/orders/count' . $filter->toQuery());
+        if (in_array($version, self::$available_versions)) {
+            return self::deleteResource("/".$brand_id.'/metafields/'.$metafield_id, 'Brand', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * The order count grouped by order status
+     * Delete all brands.
      *
-     * @param array $filter
-     * @return Resources\OrderStatus
+     * @param null $version
+     * @return mixed
+     * @throws Exception
      */
-    public static function getOrderStatusesWithCounts($filter = array())
+    public static function deleteAllBrands($version = null)
     {
-        $filter = Filter::create($filter);
-        $resource = self::getResource('/orders/count' . $filter->toQuery(), "OrderStatus");
-        return $resource->statuses;
+        if (in_array(self::$version, self::$available_versions)) {
+            return self::deleteResource('', 'Brand', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * A single order.
+     * Get a cart from cart id.
      *
-     * @param int $id order id
-     * @return Resources\Order
+     * @param $id
+     * @param null $version
+     * @return mixed
+     * @throws Exception
      */
-    public static function getOrder($id)
+    public static function getCart($id, $version = null)
     {
-        return self::getResource('/orders/' . $id, 'Order');
+        if (in_array($version, self::$available_versions)) {
+            return self::getResource("/".$id, 'Cart', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * @param $orderID
+     * Create a new cart from the given data.
+     *
+     * @param mixed $object
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function getOrderProducts($orderID)
+    public static function createCart($object, $version = null)
     {
-        return self::getCollection('/orders/' . $orderID . '/products', 'OrderProduct');
+        if (in_array($version, self::$available_versions)) {
+            return self::createResource('', $object, "Cart", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * The total number of order products in the collection.
+     * Create a Line items for existing cart from the given data.
      *
-     * @param $orderID
+     * @param $id
+     * @param mixed $object
      * @param array $filter
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function getOrderProductsCount($orderID, $filter = array())
+    public static function createCartLineItems($id, $object, $filter = array(), $version = null)
     {
         $filter = Filter::create($filter);
-        return self::getCount('/orders/' . $orderID . '/products/count' . $filter->toQuery());
+        if (in_array($version, self::$available_versions)) {
+            return self::createResource('/'.$id.'/items'.$filter->toQuery(), $object, "Cart", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Delete the given order (unlike in the Control Panel, this will permanently
-     * delete the order).
+     * update cart customer id.
      *
-     * @param int $id order id
+     * @param $cart_id
+     * @param $customer_id
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function deleteOrder($id)
+    public static function updateCartCustomerId($cart_id, $customer_id, $version = null)
     {
-        return self::deleteResource('/orders/' . $id);
+        if (in_array($version, self::$available_versions)) {
+            return self::updateResource("/".$cart_id, array("customer_id"=>$customer_id), 'Cart', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Delete all orders.
+     * Update a Line items for existing cart from the given data.
      *
+     * @param $cart_id
+     * @param $line_item_id
+     * @param array|object $object
+     * @param array $filter
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function deleteAllOrders()
+    public static function updateCartLineItem($cart_id, $line_item_id, $object, $filter = array(), $version = null)
     {
-        return self::deleteResource('/orders');
+        $filter = Filter::create($filter);
+        if (in_array($version, self::$available_versions)) {
+            return self::updateResource('/'.$cart_id.'/items/'.$line_item_id.$filter->toQuery(), $object, "Cart", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Create an order
+     * Delete a Cart by Cart Id
      *
-     * @param $object
+     * @param $id
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function createOrder($object)
+    public static function deleteCart($id, $version = null)
     {
-        return self::createResource('/orders', $object);
+        if (in_array($version, self::$available_versions)) {
+            return self::deleteResource('/'.$id, "Cart", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Update the given order.
+     * Delete a Cart Line Item by Cart Id and Line Item Id
      *
-     * @param int $id order id
-     * @param mixed $object fields to update
+     * @param $cart_id
+     * @param $line_item_id
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function updateOrder($id, $object)
+    public static function deleteCartLineItem($cart_id, $line_item_id, $version = null)
     {
-        return self::updateResource('/orders/' . $id, $object);
+        if (in_array($version, self::$available_versions)) {
+            return self::deleteResource('/'.$cart_id.'/items/'.$line_item_id, "Cart", $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * The list of customers.
+     * Get All Wishlists.
      *
      * @param array $filter
-     * @return array
+     * @param null $version
+     * @return mixed
+     * @throws Exception
      */
-    public static function getCustomers($filter = array())
+    public static function getWishlists($filter = array(), $version = null)
     {
         $filter = Filter::create($filter);
-        return self::getCollection('/customers' . $filter->toQuery(), 'Customer');
+        if (in_array($version, self::$available_versions)) {
+            return self::getCollection($filter->toQuery(), 'Wishlist', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * The total number of customers in the collection.
+     * Get Wishlist by Wishlist Id.
      *
-     * @param array $filter
-     * @return int
+     * @param $id
+     * @param null $version
+     * @return mixed
+     * @throws Exception
      */
-    public static function getCustomersCount($filter = array())
+    public static function getWishlist($id, $version = null)
     {
-        $filter = Filter::create($filter);
-        return self::getCount('/customers/count' . $filter->toQuery());
+        if (in_array($version, self::$available_versions)) {
+            return self::getResource("/".$id, 'Wishlist', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Bulk delete customers.
+     * Get Wishlist by Wishlist Id.
      *
-     * @param array $filter
-     * @return array
+     * @param array|object $object
+     * @param null $version
+     * @return mixed
+     * @throws Exception
      */
-    public static function deleteCustomers($filter = array())
+    public static function createWishlist($object, $version = null)
     {
-        $filter = Filter::create($filter);
-        return self::deleteResource('/customers' . $filter->toQuery());
+        if (in_array($version, self::$available_versions)) {
+            return self::createResource("", $object, 'Wishlist', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * A single customer by given id.
+     * Get Wishlist by Wishlist Id.
      *
-     * @param int $id customer id
-     * @return Resources\Customer
+     * @param $id
+     * @param array|object $object
+     * @param null $version
+     * @return mixed
+     * @throws Exception
      */
-    public static function getCustomer($id)
+    public static function createWishlistItems($id, $object, $version = null)
     {
-        return self::getResource('/customers/' . $id, 'Customer');
+        if (in_array($version, self::$available_versions)) {
+            return self::createResource("/".$id."/items", $object, 'Wishlist', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Create a new customer from the given data.
+     * Get Wishlist by Wishlist Id.
      *
-     * @param mixed $object
+     * @param $id
+     * @param array|object $object
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function createCustomer($object)
+    public static function updateWishlist($id, $object, $version = null)
     {
-        return self::createResource('/customers', $object);
+        if (in_array($version, self::$available_versions)) {
+            return self::updateResource("/".$id, $object, 'Wishlist', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Update the given customer.
+     * Get Wishlist by Wishlist Id.
      *
-     * @param int $id customer id
-     * @param mixed $object
+     * @param $id
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function updateCustomer($id, $object)
+    public static function deleteWishlist($id, $version = null)
     {
-        return self::updateResource('/customers/' . $id, $object);
+        if (in_array($version, self::$available_versions)) {
+            return self::deleteResource("/".$id, 'Wishlist', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
     }
 
     /**
-     * Delete the given customer.
+     * Get Wishlist by Wishlist Id.
      *
-     * @param int $id customer id
+     * @param $wishlist_id
+     * @param $item_id
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function deleteWishlistItem($wishlist_id, $item_id, $version = null)
+    {
+        if (in_array($version, self::$available_versions)) {
+            return self::deleteResource("/".$wishlist_id."/items/".$item_id, 'Wishlist', $version);
+        } else {
+            throw new Exception("'version' not available");
+        }
+    }
+
+    /**
+     * The collection of orders.
+     *
+     * @param array $filter
+     * @return array
+     * @throws Exception
+     */
+    public static function getOrders($filter = array())
+    {
+        $filter = Filter::create($filter);
+        return self::getCollection('/orders' . $filter->toQuery(), 'Order');
+    }
+
+    /**
+     * The number of orders in the collection.
+     *
+     * @param array $filter
+     * @return int
+     */
+    public static function getOrdersCount($filter = array())
+    {
+        $filter = Filter::create($filter);
+        return self::getCount('/orders/count' . $filter->toQuery());
+    }
+
+    /**
+     * The order count grouped by order status
+     *
+     * @param array $filter
+     * @return Resources\OrderStatus
+     * @throws Exception
+     */
+    public static function getOrderStatusesWithCounts($filter = array())
+    {
+        $filter = Filter::create($filter);
+        $resource = self::getResource('/orders/count' . $filter->toQuery(), "OrderStatus");
+        return $resource->statuses;
+    }
+
+    /**
+     * A single order.
+     *
+     * @param int $id order id
+     * @return Resources\Order
+     * @throws Exception
+     */
+    public static function getOrder($id)
+    {
+        return self::getResource('/orders/' . $id, 'Order');
+    }
+
+    /**
+     * @param $orderID
+     * @return mixed
+     * @throws Exception
+     */
+    public static function getOrderProducts($orderID)
+    {
+        return self::getCollection('/orders/' . $orderID . '/products', 'OrderProduct');
+    }
+
+    /**
+     * The total number of order products in the collection.
+     *
+     * @param $orderID
+     * @param array $filter
+     * @return mixed
+     */
+    public static function getOrderProductsCount($orderID, $filter = array())
+    {
+        $filter = Filter::create($filter);
+        return self::getCount('/orders/' . $orderID . '/products/count' . $filter->toQuery());
+    }
+
+    /**
+     * Delete the given order (unlike in the Control Panel, this will permanently
+     * delete the order).
+     *
+     * @param int $id order id
+     * @return mixed
+     * @throws Exception
+     */
+    public static function deleteOrder($id)
+    {
+        return self::deleteResource('/orders/' . $id);
+    }
+
+    /**
+     * Delete all orders.
+     *
+     * @return mixed
+     */
+    public static function deleteAllOrders()
+    {
+        return self::deleteResource('/orders');
+    }
+
+    /**
+     * Create an order
+     *
+     * @param $object
+     * @return mixed
+     */
+    public static function createOrder($object)
+    {
+        return self::createResource('/orders', $object);
+    }
+
+    /**
+     * Update the given order.
+     *
+     * @param int $id order id
+     * @param mixed $object fields to update
+     * @return mixed
+     */
+    public static function updateOrder($id, $object)
+    {
+        return self::updateResource('/orders/' . $id, $object);
+    }
+
+    /**
+     * The list of customers.
+     *
+     * @param array $filter
+     * @return array
+     * @throws Exception
+     */
+    public static function getCustomers($filter = array())
+    {
+        $filter = Filter::create($filter);
+        return self::getCollection('/customers' . $filter->toQuery(), 'Customer');
+    }
+
+    /**
+     * The total number of customers in the collection.
+     *
+     * @param array $filter
+     * @return int
+     */
+    public static function getCustomersCount($filter = array())
+    {
+        $filter = Filter::create($filter);
+        return self::getCount('/customers/count' . $filter->toQuery());
+    }
+
+    /**
+     * Bulk delete customers.
+     *
+     * @param array $filter
+     * @return array
+     */
+    public static function deleteCustomers($filter = array())
+    {
+        $filter = Filter::create($filter);
+        return self::deleteResource('/customers' . $filter->toQuery());
+    }
+
+    /**
+     * A single customer by given id.
+     *
+     * @param int $id customer id
+     * @return Resources\Customer
+     */
+    public static function getCustomer($id)
+    {
+        return self::getResource('/customers/' . $id, 'Customer');
+    }
+
+    /**
+     * Create a new customer from the given data.
+     *
+     * @param mixed $object
+     * @return mixed
+     */
+    public static function createCustomer($object)
+    {
+        return self::createResource('/customers', $object);
+    }
+
+    /**
+     * Update the given customer.
+     *
+     * @param int $id customer id
+     * @param mixed $object
+     * @return mixed
+     */
+    public static function updateCustomer($id, $object)
+    {
+        return self::updateResource('/customers/' . $id, $object);
+    }
+
+    /**
+     * Delete the given customer.
+     *
+     * @param int $id customer id
      * @return mixed
      */
     public static function deleteCustomer($id)
@@ -1184,12 +1750,29 @@ public static function getOrderStatuses()
      * Get collection of product skus
      *
      * @param array $filter
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function getSkus($filter = array(), $version = null)
+    {
+        $filter = Filter::create($filter);
+        return self::getCollection('/skus' . $filter->toQuery(), 'Sku', $version);
+    }
+
+    /**
+     * Get collection of product skus
+     *
+     * @param $id
+     * @param array $filter
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function getSkus($filter = array())
+    public static function getProductSkus($id, $filter = array(), $version = null)
     {
         $filter = Filter::create($filter);
-        return self::getCollection('/products/skus' . $filter->toQuery(), 'Sku');
+        return self::getCollection('/'.$id.'/skus' . $filter->toQuery(), 'Sku', $version);
     }
 
     /**
@@ -1524,11 +2107,13 @@ public static function getCurrencies($filter = array())
      *
      * @param string $productId
      * @param mixed $object
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function createProductImage($productId, $object)
+    public static function createProductImage($productId, $object, $version = null)
     {
-        return self::createResource('/products/' . $productId . '/images', $object);
+        return self::createResource('/' . $productId . '/images', $object, 'ProductImage', $version);
     }
 
     /**
@@ -1537,11 +2122,13 @@ public static function createProductImage($productId, $object)
      * @param string $productId
      * @param string $imageId
      * @param mixed $object
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function updateProductImage($productId, $imageId, $object)
+    public static function updateProductImage($productId, $imageId, $object, $version = null)
     {
-        return self::updateResource('/products/' . $productId . '/images/' . $imageId, $object);
+        return self::updateResource('/' . $productId . '/images/' . $imageId, $object, 'ProductImage', $version);
     }
 
     /**
@@ -1549,11 +2136,13 @@ public static function updateProductImage($productId, $imageId, $object)
      *
      * @param int $productId
      * @param int $imageId
+     * @param null $version
      * @return Resources\ProductImage|string
+     * @throws Exception
      */
-    public static function getProductImage($productId, $imageId)
+    public static function getProductImage($productId, $imageId, $version = null)
     {
-        return self::getResource('/products/' . $productId . '/images/' . $imageId, 'ProductImage');
+        return self::getResource('/' . $productId . '/images/' . $imageId, 'ProductImage', $version);
     }
 
     /**
@@ -1561,84 +2150,495 @@ public static function getProductImage($productId, $imageId)
      *
      * @param int $productId
      * @param int $imageId
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function deleteProductImage($productId, $imageId)
+    public static function deleteProductImage($productId, $imageId, $version = null)
     {
-        return self::deleteResource('/products/' . $productId . '/images/' . $imageId);
+        return self::deleteResource('/' . $productId . '/images/' . $imageId, 'ProductImage', $version);
     }
 
     /**
-     * Get all content pages
+     * Returns a product videos resource by the given product id.
      *
-     * @return mixed
+     * @param $id
+     * @param null $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
      */
-    public static function getPages()
+    public static function getProductVideos($id, $filter = array(), $version = null)
     {
-        return self::getCollection('/pages', 'Page');
+        $filter = Filter::create($filter);
+        return self::getCollection('/' . $id . '/videos'.$filter->toQuery(), 'ProductVideo', $version);
     }
 
     /**
-     * Get single content pages
+     * Create a product videos resource by the given product id.
      *
-     * @param int $pageId
-     * @return mixed
+     * @param $id
+     * @param $object
+     * @param null $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
      */
-    public static function getPage($pageId)
+    public static function createProductVideo($id, $object, $version = null)
     {
-        return self::getResource('/pages/' . $pageId, 'Page');
+        return self::createResource('/' . $id . '/videos', $object, 'ProductVideo', $version);
     }
 
     /**
-     * Create a new content pages
+     * Returns a product videos resource by the given product id.
      *
-     * @param $object
-     * @return mixed
+     * @param $product_id
+     * @param $id
+     * @param null $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
      */
-    public static function createPage($object)
+    public static function getProductVideo($product_id, $id, $version = null)
     {
-        return self::createResource('/pages', $object);
+        return self::getResource('/' . $product_id . '/videos/'.$id, 'ProductVideo', $version);
     }
 
     /**
-     * Update an existing content page
+     * Update a product videos resource by the given product id.
      *
-     * @param int $pageId
+     * @param $product_id
+     * @param $id
      * @param $object
-     * @return mixed
+     * @param null $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
      */
-    public static function updatePage($pageId, $object)
+    public static function updateProductVideo($product_id, $id, $object, $version = null)
     {
-        return self::updateResource('/pages/' . $pageId, $object);
+        return self::updateResource('/' . $product_id . '/videos/'.$id, $object, 'ProductVideo', $version);
     }
 
     /**
-     * Delete an existing content page
+     * Delete a product videos resource by the given product id.
      *
-     * @param int $pageId
-     * @return mixed
+     * @param $product_id
+     * @param $id
+     * @param null $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
      */
-    public static function deletePage($pageId)
+    public static function deleteProductVideo($product_id, $id, $version = null)
     {
-        return self::deleteResource('/pages/' . $pageId);
+        return self::deleteResource('/' . $product_id . '/videos/'.$id, 'ProductVideo', $version);
     }
 
     /**
-     * Create a Gift Certificate
+     * Returns a product bulk pricing rules resource by the given product id.
      *
-     * @param array $object
-     * @return mixed
+     * @param $id
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
      */
-    public static function createGiftCertificate($object)
+    public static function getProductBulkPricingRules($id, $filter = array(), $version = "v3")
     {
-        return self::createResource('/gift_certificates', $object);
+        $filter = Filter::create($filter);
+        $temp_object =  self::getCollection('/' . $id . '/bulk-pricing-rules'.$filter->toQuery(), 'ProductBulkPricingRule', $version);
+        if (gettype($temp_object) == "object") {
+            foreach ($temp_object as $obj) {
+                $obj->product_id = $id;
+            }
+        }
+        return $temp_object;
     }
 
     /**
-     * Get a Gift Certificate
+     * Returns a product bulk pricing rule resource by the given product id.
      *
-     * @param int $giftCertificateId
-     * @return mixed
+     * @param $product_id
+     * @param $id
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function getProductBulkPricingRule($product_id, $id, $filter = array(), $version = "v3")
+    {
+        $filter = Filter::create($filter);
+        $temp_object = self::getResource('/' . $product_id . '/bulk-pricing-rules/'.$id.$filter->toQuery(), 'ProductBulkPricingRule', $version);
+        if (gettype($temp_object) == "object") {
+            $temp_object->product_id = $product_id;
+        }
+        return $temp_object;
+    }
+
+    /**
+     * Create a Bulk Pricing Rule resource by the given product id.
+     *
+     * @param $id
+     * @param $object
+     * @param array $filter
+     * @param null $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
+     */
+    public static function createProductBulkPricingRule($id, $object, $filter = array(), $version = "v3")
+    {
+        $filter = Filter::create($filter);
+        return self::createResource('/' . $id . '/bulk-pricing-rules'.$filter->toQuery(), $object, 'ProductBulkPricingRule', $version);
+    }
+
+    /**
+     * Update a Bulk Pricing Rule resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param $object
+     * @param string $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
+     */
+    public static function updateProductBulkPricingRule($product_id, $id, $object, $version = "v3")
+    {
+        return self::updateResource('/' . $product_id . '/bulk-pricing-rules/'.$id, $object, 'ProductBulkPricingRule', $version);
+    }
+
+    /**
+     * Update a Bulk Pricing Rule resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param string $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
+     */
+    public static function deleteProductBulkPricingRule($product_id, $id, $version = "v3")
+    {
+        return self::deleteResource('/' . $product_id . '/bulk-pricing-rules/'.$id, 'ProductBulkPricingRule', $version);
+    }
+
+    /**
+     * Returns a product bulk pricing rules resource by the given product id.
+     *
+     * @param $id
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function getProductComplexRules($id, $filter = array(), $version = "v3")
+    {
+        $filter = Filter::create($filter);
+        return self::getCollection('/' . $id . '/complex-rules'.$filter->toQuery(), 'ProductComplexRule', $version);
+    }
+
+    /**
+     * Returns a product bulk pricing rule resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function getProductComplexRule($product_id, $id, $filter = array(), $version = "v3")
+    {
+        $filter = Filter::create($filter);
+        return self::getResource('/' . $product_id . '/complex-rules/'.$id.$filter->toQuery(), 'ProductComplexRule', $version);
+    }
+
+    /**
+     * Create a Complex Rule resource by the given product id.
+     *
+     * @param $id
+     * @param $object
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
+     */
+    public static function createProductComplexRule($id, $object, $version = "v3")
+    {
+        return self::createResource('/' . $id . '/complex-rules', $object, 'ProductComplexRule', $version);
+    }
+
+    /**
+     * Update a Complex Rule resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param $object
+     * @param string $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
+     */
+    public static function updateProductComplexRule($product_id, $id, $object, $version = "v3")
+    {
+        return self::updateResource('/' . $product_id . '/complex-rules/'.$id, $object, 'ProductComplexRule', $version);
+    }
+
+    /**
+     * Update a Complex Rule resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param string $version
+     * @return Resources\ProductImage|string
+     * @throws Exception
+     */
+    public static function deleteProductComplexRule($product_id, $id, $version = "v3")
+    {
+        return self::deleteResource('/' . $product_id . '/complex-rules/'.$id, 'ProductComplexRule', $version);
+    }
+
+    /**
+     * Returns a product variants resource by the given product id.
+     *
+     * @param $id
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function getProductVariants($id, $filter = array(), $version = "v3")
+    {
+        $filter = Filter::create($filter);
+        return self::getCollection('/' . $id . '/variants'.$filter->toQuery(), 'ProductVariant', $version);
+    }
+
+    /**
+     * Returns a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function getProductVariant($product_id, $id, $filter = array(), $version = "v3")
+    {
+        $filter = Filter::create($filter);
+        return self::getResource('/' . $product_id . '/variants/'.$id.$filter->toQuery(), 'ProductVariant', $version);
+    }
+
+    /**
+     * Returns a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $object
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function createProductVariant($product_id, $object, $version = "v3")
+    {
+        return self::createResource('/' . $product_id . '/variants', $object, 'ProductVariant', $version);
+    }
+
+    /**
+     * Returns a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param $image_url
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function createProductVariantImage($product_id, $id, $image_url, $version = "v3")
+    {
+        return self::createResource('/' . $product_id . '/variants/'.$id.'/image', array("image_url" => $image_url), 'ProductVariant', $version);
+    }
+
+    /**
+     * Update a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param $object
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function updateProductVariant($product_id, $id, $object, $version = "v3")
+    {
+        return self::updateResource('/' . $product_id . '/variants/'.$id, $object, 'ProductVariant', $version);
+    }
+
+    /**
+     * Delete a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function deleteProductVariant($product_id, $id, $version = "v3")
+    {
+        return self::deleteResource('/' . $product_id . '/variants/'.$id, 'ProductVariant', $version);
+    }
+
+    /**
+     * Returns a product variants resource by the given product id.
+     *
+     * @param $product_id
+     * @param $variant_id
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function getProductVariantMetafields($product_id, $variant_id, $filter = array(), $version = "v3")
+    {
+        $filter = Filter::create($filter);
+        $temp_object = self::getCollection('/' . $product_id . '/variants/'.$variant_id.'/metafields'.$filter->toQuery(), 'ProductVariantMetafield', $version);
+        if (gettype($temp_object) == "object") {
+            foreach ($temp_object as $obj) {
+                $obj->product_id = $product_id;
+            }
+        }
+        return $temp_object;
+    }
+
+    /**
+     * Returns a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $id
+     * @param array $filter
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function getProductVariantMetafield($product_id, $variant_id, $id, $filter = array(), $version = "v3")
+    {
+        $filter = Filter::create($filter);
+        $temp_object = self::getResource('/' . $product_id . '/variants/'.$variant_id.'/metafields/'.$id.$filter->toQuery(), 'ProductVariantMetafield', $version);
+        if (gettype($temp_object) == "object") {
+            $temp_object->product_id = $product_id;
+        }
+        return $temp_object;
+    }
+
+    /**
+     * Returns a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $variant_id
+     * @param $object
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function createProductVariantMetafield($product_id, $variant_id, $object, $version = "v3")
+    {
+        return self::createResource('/' . $product_id . '/variants/'.$variant_id.'/metafields', $object, 'ProductVariantMetafield', $version);
+    }
+
+    /**
+     * Returns a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $variant_id
+     * @param $id
+     * @param $object
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function updateProductVariantMetafield($product_id, $variant_id, $id, $object, $version = "v3")
+    {
+        return self::updateResource('/' . $product_id . '/variants/'.$variant_id.'/metafields/'.$id, $object, 'ProductVariantMetafield', $version);
+    }
+
+    /**
+     * Returns a product variant resource by the given product id.
+     *
+     * @param $product_id
+     * @param $variant_id
+     * @param $id
+     * @param string $version
+     * @return Resources\ProductBulkPricingRule|string
+     * @throws Exception
+     */
+    public static function deleteProductVariantMetafield($product_id, $variant_id, $id, $version = "v3")
+    {
+        return self::deleteResource('/' . $product_id . '/variants/'.$variant_id.'/metafields/'.$id, 'ProductVariantMetafield', $version);
+    }
+
+    /**
+     * Get all content pages
+     *
+     * @return mixed
+     */
+    public static function getPages()
+    {
+        return self::getCollection('/pages', 'Page');
+    }
+
+    /**
+     * Get single content pages
+     *
+     * @param int $pageId
+     * @return mixed
+     */
+    public static function getPage($pageId)
+    {
+        return self::getResource('/pages/' . $pageId, 'Page');
+    }
+
+    /**
+     * Create a new content pages
+     *
+     * @param $object
+     * @return mixed
+     */
+    public static function createPage($object)
+    {
+        return self::createResource('/pages', $object);
+    }
+
+    /**
+     * Update an existing content page
+     *
+     * @param int $pageId
+     * @param $object
+     * @return mixed
+     */
+    public static function updatePage($pageId, $object)
+    {
+        return self::updateResource('/pages/' . $pageId, $object);
+    }
+
+    /**
+     * Delete an existing content page
+     *
+     * @param int $pageId
+     * @return mixed
+     */
+    public static function deletePage($pageId)
+    {
+        return self::deleteResource('/pages/' . $pageId);
+    }
+
+    /**
+     * Create a Gift Certificate
+     *
+     * @param array $object
+     * @return mixed
+     */
+    public static function createGiftCertificate($object)
+    {
+        return self::createResource('/gift_certificates', $object);
+    }
+
+    /**
+     * Get a Gift Certificate
+     *
+     * @param int $giftCertificateId
+     * @return mixed
      */
     public static function getGiftCertificate($giftCertificateId)
     {
@@ -1785,11 +2785,13 @@ public static function createCustomerAddress($customerID, $object)
      *
      * @param int $productID
      * @param array $object
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function createProductRule($productID, $object)
+    public static function createProductRule($productID, $object, $version = "v2")
     {
-        return self::createResource('/products/' . $productID . '/rules', $object);
+        return self::createResource('/' . $productID . '/rules', $object, 'Rule', $version);
     }
 
     /**
@@ -1847,24 +2849,167 @@ public static function deleteAllOptions()
     /**
      * Return the collection of all option values for a given option.
      *
-     * @param int $productId
+     * @param $id
+     * @param array $filter
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function getProductOptions($productId)
+    public static function getProductOptions($id, $filter = array(), $version = null)
     {
-        return self::getCollection('/products/' . $productId . '/options');
+        $filter = Filter::create($filter);
+        return self::getCollection('/' . $id . '/options'.$filter->toQuery(), 'ProductOption', $version);
     }
 
     /**
      * Return the collection of all option values for a given option.
      *
-     * @param int $productId
-     * @param int $productOptionId
+     * @param $product_id
+     * @param $id
+     * @param array $filter
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function getProductOption($product_id, $id, $filter = array(), $version = null)
+    {
+        $filter = Filter::create($filter);
+        return self::getResource('/' . $product_id . '/options/' . $id.$filter->toQuery(), 'ProductOption', $version);
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param $product_id
+     * @param $id
+     * @param $object
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function createProductOption($product_id, $id, $object, $version = null)
+    {
+        return self::createResource('/' . $product_id . '/options/' . $id, $object, 'ProductOption', $version);
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param $product_id
+     * @param $id
+     * @param $object
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function getProductOption($productId, $productOptionId)
+    public static function updateProductOption($product_id, $id, $object, $version = null)
     {
-        return self::getResource('/products/' . $productId . '/options/' . $productOptionId);
+        return self::updateResource('/' . $product_id . '/options/' . $id, $object, 'ProductOption', $version);
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param $product_id
+     * @param $id
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function deleteProductOption($product_id, $id, $version = null)
+    {
+        return self::deleteResource('/' . $product_id . '/options/' . $id, 'ProductOption', $version);
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param $product_id
+     * @param $option_id
+     * @param array $filter
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function getProductOptionValues($product_id, $option_id, $filter = array(), $version = null)
+    {
+        $filter = Filter::create($filter);
+        $temp_object = self::getCollection('/' . $product_id . '/options/'.$option_id.'/values'.$filter->toQuery(), 'ProductOptionValue', $version);
+        if (gettype($temp_object) == "object") {
+            foreach ($temp_object as $obj) {
+                $obj->product_id = $product_id;
+                $obj->option_id = $option_id;
+            }
+        }
+        return $temp_object;
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param $product_id
+     * @param $option_id
+     * @param $id
+     * @param array $filter
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function getProductOptionValue($product_id, $option_id, $id, $filter = array(), $version = null)
+    {
+        $filter = Filter::create($filter);
+        $temp_object = self::getResource('/' . $product_id . '/options/'.$option_id.'/values/'.$id.$filter->toQuery(), 'ProductOptionValue', $version);
+        if (gettype($temp_object) == "object") {
+            $temp_object->product_id = $product_id;
+            $temp_object->option_id = $option_id;
+        }
+        return $temp_object;
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param $product_id
+     * @param $id
+     * @param $object
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function createProductOptionValue($product_id, $option_id, $object, $version = null)
+    {
+        return self::createResource('/' . $product_id . '/options/' . $option_id.'/values', $object, 'ProductOptionValue', $version);
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param $product_id
+     * @param $option_id
+     * @param $id
+     * @param $object
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function updateProductOptionValue($product_id, $option_id, $id, $object, $version = null)
+    {
+        return self::updateResource('/' . $product_id . '/options/' . $option_id.'/values/'.$id, $object, 'ProductOptionValue', $version);
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param $product_id
+     * @param $option_id
+     * @param $id
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function deleteProductOptionValue($product_id, $option_id, $id, $version = null)
+    {
+        return self::deleteResource('/' . $product_id . '/options/' . $option_id.'/values/'.$id, 'ProductOptionValue', $version);
     }
 
     /**
@@ -1872,11 +3017,26 @@ public static function getProductOption($productId, $productOptionId)
      *
      * @param int $productId
      * @param int $productRuleId
+     * @param null $version
+     * @return mixed
+     * @throws Exception
+     */
+    public static function getProductRule($productId, $productRuleId, $version = "v2")
+    {
+        return self::getResource('/' . $productId . '/rules/' . $productRuleId, 'Rule', $version);
+    }
+
+    /**
+     * Return the collection of all option values for a given option.
+     *
+     * @param int $productId
+     * @param null $version
      * @return mixed
+     * @throws Exception
      */
-    public static function getProductRule($productId, $productRuleId)
+    public static function getProductRules($productId, $version = "v2")
     {
-        return self::getResource('/products/' . $productId . '/rules/' . $productRuleId);
+        return self::getResource('/' . $productId . '/rules', 'Rule', $version);
     }
 
     /**
@@ -2046,11 +3206,13 @@ public static function deleteShippingMethod($zoneId, $methodId)
      *
      * @param $productId
      * @param array $filter
+     * @param string $version
      * @return mixed
+     * @throws Exception
      */
-    public static function getSkusByProduct($productId, $filter = array())
+    public static function getSkusByProduct($productId, $filter = array(), $version = "v2")
     {
         $filter = Filter::create($filter);
-        return self::getCollection('/products/'.$productId.'/skus' . $filter->toQuery(), 'Sku');
+        return self::getCollection('/'.$productId.'/skus' . $filter->toQuery(), 'Sku', $version);
     }
 }
diff --git a/src/Bigcommerce/Api/Connection.php b/src/Bigcommerce/Api/Connection.php
index 1e5f7fd1..548e0685 100644
--- a/src/Bigcommerce/Api/Connection.php
+++ b/src/Bigcommerce/Api/Connection.php
@@ -165,6 +165,7 @@ public function failOnError($option = true)
      *
      * @param string $username
      * @param string $password
+     * @deprecated
      */
     public function authenticateBasic($username, $password)
     {
diff --git a/src/Bigcommerce/Api/Error.php b/src/Bigcommerce/Api/Error.php
index aae1d5ab..ed521296 100644
--- a/src/Bigcommerce/Api/Error.php
+++ b/src/Bigcommerce/Api/Error.php
@@ -11,6 +11,12 @@ public function __construct($message, $code)
     {
         if (is_array($message)) {
             $message = $message[0]->message;
+        } else {
+            if (isset($message->title)) {
+                $message = $message->title;
+            } else {
+                $message = "Undefined Error Occurred";
+            }
         }
 
         parent::__construct($message, $code);
diff --git a/src/Bigcommerce/Api/Resource.php b/src/Bigcommerce/Api/Resource.php
index 53f8a857..363dd974 100644
--- a/src/Bigcommerce/Api/Resource.php
+++ b/src/Bigcommerce/Api/Resource.php
@@ -110,4 +110,9 @@ private function isIgnoredField($field, $value)
 
         return false;
     }
+
+    public function toJson()
+    {
+        return json_encode($this->fields, true);
+    }
 }
diff --git a/src/Bigcommerce/Api/Resources/Brand.php b/src/Bigcommerce/Api/Resources/Brand.php
index a8b301fe..2f5495b8 100644
--- a/src/Bigcommerce/Api/Resources/Brand.php
+++ b/src/Bigcommerce/Api/Resources/Brand.php
@@ -15,13 +15,28 @@ class Brand extends Resource
         'id',
     );
 
-    public function create()
+    public $urls = array(
+        "v2" => "/brands",
+        "v3" => "/catalog/brands"
+    );
+
+    public function create($version = null)
+    {
+        return Client::createBrand($this->getCreateFields(), $version);
+    }
+
+    public function update($version = null)
+    {
+        return Client::updateBrand($this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = null)
     {
-        return Client::createBrand($this->getCreateFields());
+        return Client::deleteBrand($this->id, $version);
     }
 
-    public function update()
+    public function toJson()
     {
-        return Client::updateBrand($this->id, $this->getUpdateFields());
+        return parent::toJson();
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/Cart.php b/src/Bigcommerce/Api/Resources/Cart.php
new file mode 100644
index 00000000..3a730a31
--- /dev/null
+++ b/src/Bigcommerce/Api/Resources/Cart.php
@@ -0,0 +1,65 @@
+<?php
+
+
+namespace Bigcommerce\Api\Resources;
+
+use Bigcommerce\Api\Resource;
+use Bigcommerce\Api\Client;
+use Exception;
+
+/**
+ * Represents a single Cart.
+ */
+class Cart extends Resource
+{
+    protected $ignoreOnCreate = array(
+        'id'
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id'
+    );
+
+    public $urls = array(
+        "v3" => "/carts"
+    );
+
+    public function create($version = "v3")
+    {
+        return Client::createCart($this->getCreateFields(), $version);
+    }
+
+    /** Note only Customer Id can be updated using Cart Update *
+     * @param $customer_id
+     * @param string $version
+     * @return mixed
+     * @throws Exception
+     */
+    public function update($customer_id, $version = "v3")
+    {
+        return Client::updateCartCustomerId($this->id, $customer_id, $version);
+    }
+
+    /** Add Line Items to Cart *
+     * @param $items
+     * @param array $filter
+     * @param string $version
+     * @return mixed
+     * @throws Exception
+     */
+    public function addItems($items, $filter = array(), $version = "v3")
+    {
+        return Client::createCartLineItems($this->id, $items, $filter, $version);
+    }
+
+    public function delete($version = "v3")
+    {
+        return Client::deleteCart($this->id, $version);
+    }
+
+    public function toJson()
+    {
+        return parent::toJson();
+    }
+
+}
\ No newline at end of file
diff --git a/src/Bigcommerce/Api/Resources/Option.php b/src/Bigcommerce/Api/Resources/Option.php
index 4c4b76b9..cb2bd89b 100644
--- a/src/Bigcommerce/Api/Resources/Option.php
+++ b/src/Bigcommerce/Api/Resources/Option.php
@@ -12,6 +12,6 @@ class Option extends Resource
 {
     public function values()
     {
-        return Client::getCollection($this->fields->values->resource, 'OptionValue');
+        return Client::getCollection($this->fields->values->resource, 'OptionValue', "v2");
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/Product.php b/src/Bigcommerce/Api/Resources/Product.php
index 3c698249..e1bc4e38 100644
--- a/src/Bigcommerce/Api/Resources/Product.php
+++ b/src/Bigcommerce/Api/Resources/Product.php
@@ -40,73 +40,135 @@ class Product extends Resource
         'tax_class',
     );
 
+    public $urls = array(
+        "v2" => "/products",
+        "v3" => "/catalog/products"
+    );
+
     protected $ignoreIfZero = array(
         'tax_class_id',
     );
 
-    public function brand()
+    protected function getProductId()
+    {
+        return $this->id;
+    }
+
+    public function brand($version = null)
     {
-        return Client::getResource($this->fields->brand->resource, 'Brand');
+        return Client::getBrand($this->brand_id, $version);
     }
 
-    public function images()
+    public function images($id = null, $filter = array(), $version = null)
     {
-        return Client::getCollection($this->fields->images->resource, 'ProductImage');
+        if (is_null($id)) {
+            return Client::getProductImages($this->id, $filter, $version);
+        } else {
+            return Client::getProductImage($this->id, $id, $version);
+        }
     }
 
-    public function skus()
+    public function skus($filter = array(), $version = "v2")
     {
-        return Client::getCollection($this->fields->skus->resource, 'Sku');
+        return Client::getProductSkus($this->id, $filter, $version);
     }
 
-    public function rules()
+    public function rules($id, $version = "v2")
     {
-        return Client::getCollection($this->fields->rules->resource, 'Rule');
+        if (is_null($id)) {
+            return Client::getProductRules($this->id, $version);
+        } else {
+            return Client::getProductRule($this->id, $id, $version);
+        }
     }
 
-    public function videos()
+    public function videos($id = null, $filter = array(), $version = null)
     {
-        return Client::getCollection($this->fields->videos->resource, 'ProductVideo');
+        if (is_null($id)) {
+            return Client::getProductVideos($this->id, $filter, $version);
+        } else {
+            return Client::getProductVideo($this->id, $id, $version);
+        }
     }
 
-    public function custom_fields()
+    public function bulk_pricing_rules($id = null, $filter = array(), $version = 'v3')
     {
-        return Client::getCollection($this->fields->custom_fields->resource, 'ProductCustomField');
+        if (is_null($id)) {
+            return Client::getProductBulkPricingRules($this->id, $filter, $version);
+        } else {
+            return Client::getProductBulkPricingRule($this->id, $id, $filter, $version);
+        }
+    }
+
+    public function complex_rules($id = null, $filter = array(), $version = 'v3')
+    {
+        if (is_null($id)) {
+            return Client::getProductComplexRules($this->id, $filter, $version);
+        } else {
+            return Client::getProductComplexRule($this->id, $id, $filter, $version);
+        }
+    }
+
+    public function variants($id = null, $filter = array(), $version = 'v3')
+    {
+        if (is_null($id)) {
+            return Client::getProductVariants($this->id, $filter, $version);
+        } else {
+            return Client::getProductVariant($this->id, $id, $filter, $version);
+        }
+    }
+
+    public function custom_fields($id = null, $version = null)
+    {
+        if (is_null($id)) {
+            return Client::getProductCustomFields($this->id, $version);
+        } else {
+            return Client::getProductCustomField($this->id, $id, $version);
+        }
     }
 
     public function configurable_fields()
     {
-        return Client::getCollection($this->fields->configurable_fields->resource, 'ProductConfigurableField');
+        return Client::getCollection($this->fields->configurable_fields->resource, 'ProductConfigurableField', "v2");
     }
 
     public function discount_rules()
     {
-        return Client::getCollection($this->fields->discount_rules->resource, 'DiscountRule');
+        return Client::getCollection($this->fields->discount_rules->resource, 'DiscountRule', "v2");
     }
 
     public function option_set()
     {
-        return Client::getResource($this->fields->option_set->resource, 'OptionSet');
+        return Client::getResource($this->fields->option_set->resource, 'OptionSet', "v2");
+    }
+
+    public function options($id, $filter = array(), $version = "v3")
+    {
+        if (is_null($id)) {
+            return Client::getProductOptions($this->id, $filter, $version);
+        } else {
+            return Client::getProductOption($this->id, $id, $filter, $version);
+        }
     }
 
-    public function options()
+    public function reviews($version = null)
     {
-        return Client::getCollection('/products/' . $this->id . '/options', 'ProductOption');
+        return Client::getProductReviews('/' . $this->id . '/reviews', $version);
     }
 
-    public function create()
+    public function create($version = null)
     {
-        return Client::createProduct($this->getCreateFields());
+        return Client::createProduct($this->getCreateFields(), $version);
     }
 
-    public function update()
+    public function update($version = null)
     {
-        return Client::updateProduct($this->id, $this->getUpdateFields());
+        return Client::updateProduct($this->id, $this->getUpdateFields(), $version);
     }
 
-    public function delete()
+    public function delete($version = null)
     {
-        return Client::deleteProduct($this->id);
+        return Client::deleteProduct($this->id, $version);
     }
 
     public function tax_class()
diff --git a/src/Bigcommerce/Api/Resources/ProductBulkPricingRule.php b/src/Bigcommerce/Api/Resources/ProductBulkPricingRule.php
new file mode 100644
index 00000000..2306c659
--- /dev/null
+++ b/src/Bigcommerce/Api/Resources/ProductBulkPricingRule.php
@@ -0,0 +1,39 @@
+<?php
+
+
+namespace Bigcommerce\Api\Resources;
+
+use Bigcommerce\Api\Client;
+use Bigcommerce\Api\Resource;
+
+class ProductBulkPricingRule extends Resource
+{
+    protected $ignoreOnCreate = array(
+        'id',
+        'product_id'
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id',
+        'product_id'
+    );
+
+    public $urls = array(
+        "v3" => "/catalog/products"
+    );
+
+    public function create($filter = array(), $version = "v3")
+    {
+        return Client::createProductBulkPricingRule($this->product_id, $this->getCreateFields(), $filter, $version);
+    }
+
+    public function update($version = "v3")
+    {
+        return Client::updateProductBulkPricingRule($this->product_id, $this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = "v3")
+    {
+        return Client::deleteProductBulkPricingRule($this->product_id, $this->id, $version);
+    }
+}
diff --git a/src/Bigcommerce/Api/Resources/ProductComplexRule.php b/src/Bigcommerce/Api/Resources/ProductComplexRule.php
new file mode 100644
index 00000000..3d1fa895
--- /dev/null
+++ b/src/Bigcommerce/Api/Resources/ProductComplexRule.php
@@ -0,0 +1,37 @@
+<?php
+
+
+namespace Bigcommerce\Api\Resources;
+
+use Bigcommerce\Api\Client;
+use Bigcommerce\Api\Resource;
+
+class ProductComplexRule extends Resource
+{
+    protected $ignoreOnCreate = array(
+        'id'
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id'
+    );
+
+    public $urls = array(
+        "v3" => "/catalog/products"
+    );
+
+    public function create($version = "v3")
+    {
+        return Client::createProductComplexRule($this->product_id, $this->getCreateFields(), $version);
+    }
+
+    public function update($version = "v3")
+    {
+        return Client::updateProductComplexRule($this->product_id, $this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = "v3")
+    {
+        return Client::deleteProductComplexRule($this->product_id, $this->id, $version);
+    }
+}
\ No newline at end of file
diff --git a/src/Bigcommerce/Api/Resources/ProductCustomField.php b/src/Bigcommerce/Api/Resources/ProductCustomField.php
index be663eb0..a0126c6e 100644
--- a/src/Bigcommerce/Api/Resources/ProductCustomField.php
+++ b/src/Bigcommerce/Api/Resources/ProductCustomField.php
@@ -20,18 +20,23 @@ class ProductCustomField extends Resource
         'product_id'
     );
 
-    public function create()
+    public $urls = array(
+        "v2" => "/products",
+        "v3" => "/catalog/products"
+    );
+
+    public function create($version = null)
     {
-        return Client::createResource('/products/' . $this->fields->product_id . '/customfields', $this->getCreateFields());
+        return Client::createProductCustomField($this->fields->product_id, $this->getCreateFields(), $version);
     }
 
-    public function update()
+    public function update($version = null)
     {
-        Client::updateResource('/products/' . $this->fields->product_id . '/customfields/' . $this->id, $this->getUpdateFields());
+        Client::updateProductCustomField($this->fields->product_id, $this->id, $this->getUpdateFields(), $version);
     }
 
-    public function delete()
+    public function delete($version = null)
     {
-        Client::deleteResource('/products/' . $this->fields->product_id . '/customfields/' . $this->id);
+        Client::deleteProductCustomField($this->fields->product_id, $this->id, $version);
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/ProductImage.php b/src/Bigcommerce/Api/Resources/ProductImage.php
index a589629b..eb76674d 100644
--- a/src/Bigcommerce/Api/Resources/ProductImage.php
+++ b/src/Bigcommerce/Api/Resources/ProductImage.php
@@ -22,18 +22,23 @@ class ProductImage extends Resource
         'product_id',
     );
 
-    public function create()
+    public $urls = array(
+        "v2" => "/products",
+        "v3" => "/catalog/products"
+    );
+
+    public function create($version = null)
     {
-        return Client::createProductImage($this->product_id, $this->getCreateFields());
+        return Client::createProductImage($this->product_id, $this->getCreateFields(), $version);
     }
 
-    public function update()
+    public function update($version = null)
     {
-        return Client::updateProductImage($this->product_id, $this->id, $this->getUpdateFields());
+        return Client::updateProductImage($this->product_id, $this->id, $this->getUpdateFields(), $version);
     }
 
-    public function delete()
+    public function delete($version = null)
     {
-        return Client::deleteProductImage($this->product_id, $this->id);
+        return Client::deleteProductImage($this->product_id, $this->id, $version);
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/ProductOption.php b/src/Bigcommerce/Api/Resources/ProductOption.php
index 9af59913..4c4bfb5c 100644
--- a/src/Bigcommerce/Api/Resources/ProductOption.php
+++ b/src/Bigcommerce/Api/Resources/ProductOption.php
@@ -10,12 +10,49 @@
  */
 class ProductOption extends Resource
 {
+    protected $ignoreOnCreate = array(
+        'id'
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id'
+    );
+
     protected $fieldMap = array(
         'option' => 'option_id'
     );
 
+    public $urls = array(
+        "v2" => "/products",
+        "v3" => "/catalog/products"
+    );
+
     public function option()
     {
-        return Client::getResource('/options/' . $this->fields->option_id, 'Option');
+        return Client::getResource('/options/' . $this->fields->option_id, 'Option', "v2");
+    }
+
+    public function values($id = null, $filter = array(), $version = "v3")
+    {
+        if (is_null($id)) {
+            return Client::getProductOptionValues($this->product_id, $this->id, $filter, $version);
+        } else {
+            return Client::getProductOptionValue($this->product_id, $this->id, $id, $filter, $version);
+        }
+    }
+
+    public function create($version = "v3")
+    {
+        return Client::createProductOption($this->product_id, $this->getCreateFields(), $version);
+    }
+
+    public function update($version = "v3")
+    {
+        return Client::updateProductOption($this->product_id, $this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = "v3")
+    {
+        return Client::deleteProductOption($this->product_id, $this->id, $version);
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/ProductOptionValue.php b/src/Bigcommerce/Api/Resources/ProductOptionValue.php
new file mode 100644
index 00000000..20901e1f
--- /dev/null
+++ b/src/Bigcommerce/Api/Resources/ProductOptionValue.php
@@ -0,0 +1,42 @@
+<?php
+
+
+namespace Bigcommerce\Api\Resources;
+
+use Bigcommerce\Api\Client;
+use Bigcommerce\Api\Resource;
+
+class ProductOptionValue extends Resource
+{
+
+    protected $ignoreOnCreate = array(
+        'id',
+        'product_id',
+        'option_id'
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id',
+        'product_id',
+        'option_id'
+    );
+
+    public $urls = array(
+        "v3" => "/catalog/products"
+    );
+
+    public function create($version = "v3")
+    {
+        return Client::createProductOptionValue($this->product_id, $this->option_id, $this->getCreateFields(), $version);
+    }
+
+    public function update($version = "v3")
+    {
+        return Client::updateProductOptionValue($this->product_id, $this->option_id, $this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = "v3")
+    {
+        return Client::deleteProductOptionValue($this->product_id, $this->option_id, $this->id, $version);
+    }
+}
diff --git a/src/Bigcommerce/Api/Resources/ProductReview.php b/src/Bigcommerce/Api/Resources/ProductReview.php
index 2170b301..5e6fa957 100644
--- a/src/Bigcommerce/Api/Resources/ProductReview.php
+++ b/src/Bigcommerce/Api/Resources/ProductReview.php
@@ -10,4 +10,8 @@
  */
 class ProductReview extends Resource
 {
+    public $urls = array(
+        "v2" => "/products",
+        "v3" => "/catalog/products"
+    );
 }
diff --git a/src/Bigcommerce/Api/Resources/ProductVariant.php b/src/Bigcommerce/Api/Resources/ProductVariant.php
new file mode 100644
index 00000000..7d105352
--- /dev/null
+++ b/src/Bigcommerce/Api/Resources/ProductVariant.php
@@ -0,0 +1,62 @@
+<?php
+
+
+namespace Bigcommerce\Api\Resources;
+
+use Bigcommerce\Api\Client;
+use Bigcommerce\Api\Resource;
+
+class ProductVariant extends Resource
+{
+    protected $ignoreOnCreate = array(
+        'id',
+        'sku_id',
+        'calculated_price',
+        'calculated_weight',
+        'map_price'
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id',
+        'product_id',
+        'option_values',
+        'sku_id',
+        'calculated_price',
+        'calculated_weight',
+        'image_url',
+        'map_price'
+    );
+
+    public $urls = array(
+        "v3" => "/catalog/products"
+    );
+
+    public function meta_fields($id = null, $filter = array(), $version = "v3")
+    {
+        if (is_null($id)) {
+            return Client::getProductVariantMetafields($this->product_id, $this->id, $filter, $version);
+        } else {
+            return Client::getProductVariantMetafield($this->product_id, $this->id, $id, $filter, $version);
+        }
+    }
+
+    public function create($filter = array(), $version = "v3")
+    {
+        return Client::createProductVariant($this->product_id, $this->getCreateFields(), $version);
+    }
+
+    public function create_image($image_url, $version = "v3")
+    {
+        return Client::createProductVariantImage($this->product_id, $this->id, $image_url, $version);
+    }
+
+    public function update($version = "v3")
+    {
+        return Client::updateProductVariant($this->product_id, $this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = "v3")
+    {
+        return Client::deleteProductVariant($this->product_id, $this->id, $version);
+    }
+}
diff --git a/src/Bigcommerce/Api/Resources/ProductVariantMetafield.php b/src/Bigcommerce/Api/Resources/ProductVariantMetafield.php
new file mode 100644
index 00000000..4bdd748f
--- /dev/null
+++ b/src/Bigcommerce/Api/Resources/ProductVariantMetafield.php
@@ -0,0 +1,40 @@
+<?php
+
+
+namespace Bigcommerce\Api\Resources;
+
+use Bigcommerce\Api\Client;
+use Bigcommerce\Api\Resource;
+
+class ProductVariantMetafield extends Resource
+{
+    protected $ignoreOnCreate = array(
+        'id',
+        'product_id'
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id',
+        'product_id'
+    );
+
+    public $urls = array(
+        "v3" => "/catalog/products"
+    );
+
+    public function create($version = "v3")
+    {
+        return Client::createProductVariantMetafield($this->product_id, $this->resource_id, $this->getCreateFields(), $version);
+    }
+
+    public function update($version = "v3")
+    {
+        return Client::updateProductVariantMetafield($this->product_id, $this->resource_id, $this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = "v3")
+    {
+        return Client::deleteProductVariantMetafield($this->product_id, $this->resource_id, $this->id, $version);
+    }
+
+}
\ No newline at end of file
diff --git a/src/Bigcommerce/Api/Resources/ProductVideo.php b/src/Bigcommerce/Api/Resources/ProductVideo.php
index d5d5b955..3d2c947a 100644
--- a/src/Bigcommerce/Api/Resources/ProductVideo.php
+++ b/src/Bigcommerce/Api/Resources/ProductVideo.php
@@ -10,4 +10,33 @@
  */
 class ProductVideo extends Resource
 {
+    protected $ignoreOnCreate = array(
+        'product_id',
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id',
+        'product_id',
+        'length'
+    );
+
+    public $urls = array(
+        "v2" => "/products",
+        "v3" => "/catalog/products"
+    );
+
+    public function create($version = null)
+    {
+        return Client::createProductVideo($this->product_id, $this->getCreateFields(), $version);
+    }
+
+    public function update($version = null)
+    {
+        return Client::updateProductVideo($this->product_id, $this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = null)
+    {
+        return Client::deleteProductVideo($this->product_id, $this->id, $version);
+    }
 }
diff --git a/src/Bigcommerce/Api/Resources/Rule.php b/src/Bigcommerce/Api/Resources/Rule.php
index 2455dcdb..f134bf15 100644
--- a/src/Bigcommerce/Api/Resources/Rule.php
+++ b/src/Bigcommerce/Api/Resources/Rule.php
@@ -20,6 +20,10 @@ class Rule extends Resource
         'product_id',
     );
 
+    public $urls = array(
+        "v2" => "/products"
+    );
+
     public function conditions()
     {
         $conditions = Client::getCollection($this->fields->conditions->resource, 'RuleCondition');
@@ -33,11 +37,11 @@ public function conditions()
 
     public function create()
     {
-        return Client::createResource('/products/' . $this->fields->product_id . '/rules', $this->getCreateFields());
+        return Client::createResource('/' . $this->fields->product_id . '/rules', $this->getCreateFields(), 'Rule', 'v2');
     }
 
     public function update()
     {
-        Client::updateResource('/products/' . $this->fields->product_id . '/rules/' . $this->fields->id, $this->getUpdateFields());
+        Client::updateResource('/' . $this->fields->product_id . '/rules/' . $this->fields->id, $this->getUpdateFields(), 'Rule', 'v2');
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/RuleCondition.php b/src/Bigcommerce/Api/Resources/RuleCondition.php
index 9ba5c954..b4b82ae0 100644
--- a/src/Bigcommerce/Api/Resources/RuleCondition.php
+++ b/src/Bigcommerce/Api/Resources/RuleCondition.php
@@ -21,13 +21,18 @@ class RuleCondition extends Resource
 
     public $product_id;
 
+    public $urls = array(
+        "v2" => "/products"
+    );
+
+
     public function create()
     {
-        return Client::createResource('/products/' . $this->product_id . '/rules/' . $this->fields->rule_id . '/conditions', $this->getCreateFields());
+        return Client::createResource('/' . $this->product_id . '/rules/' . $this->fields->rule_id . '/conditions', $this->getCreateFields(), 'RuleCondition', "v2");
     }
 
     public function update()
     {
-        Client::updateResource('/products/' . $this->product_id . '/rules/' . $this->fields->rule_id . '/conditions/' . $this->id, $this->getUpdateFields());
+        Client::updateResource('/' . $this->product_id . '/rules/' . $this->fields->rule_id . '/conditions/' . $this->id, $this->getUpdateFields(), 'RuleCondition', 'v3');
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/Sku.php b/src/Bigcommerce/Api/Resources/Sku.php
index 358b6e64..e31ffb44 100644
--- a/src/Bigcommerce/Api/Resources/Sku.php
+++ b/src/Bigcommerce/Api/Resources/Sku.php
@@ -19,6 +19,10 @@ class Sku extends Resource
         'product_id',
     );
 
+    public $urls = array(
+        "v2" => "/products"
+    );
+
     public function options()
     {
         $options = array();
@@ -36,11 +40,11 @@ public function options()
 
     public function create()
     {
-        return Client::createResource('/products/' . $this->product_id . '/skus', $this->getCreateFields());
+        return Client::createResource('/' . $this->product_id . '/skus', $this->getCreateFields(), 'Sku', 'v2');
     }
 
     public function update()
     {
-        Client::updateResource('/products/' . $this->product_id . '/skus/' . $this->id, $this->getUpdateFields());
+        Client::updateResource('/' . $this->product_id . '/skus/' . $this->id, $this->getUpdateFields(), 'Sku', 'v2');
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/SkuOption.php b/src/Bigcommerce/Api/Resources/SkuOption.php
index 88ab7524..d4dd583d 100644
--- a/src/Bigcommerce/Api/Resources/SkuOption.php
+++ b/src/Bigcommerce/Api/Resources/SkuOption.php
@@ -19,13 +19,17 @@ class SkuOption extends Resource
         'sku_id',
     );
 
+    public $urls = array(
+        "v2" => "/products"
+    );
+
     public function create()
     {
-        return Client::createResource('/products/' . $this->fields->product_id . '/skus/' . $this->fields->sku_id . '/options', $this->getCreateFields());
+        return Client::createResource('/' . $this->fields->product_id . '/skus/' . $this->fields->sku_id . '/options', $this->getCreateFields(), 'SkuOption', 'v2');
     }
 
     public function update()
     {
-        Client::updateResource('/products/' . $this->fields->product_id . '/skus/' . $this->fields->sku_id . '/options/' . $this->id, $this->getUpdateFields());
+        Client::updateResource('/' . $this->fields->product_id . '/skus/' . $this->fields->sku_id . '/options/' . $this->id, $this->getUpdateFields(), 'SkuOption', 'v2');
     }
 }
diff --git a/src/Bigcommerce/Api/Resources/Wishlist.php b/src/Bigcommerce/Api/Resources/Wishlist.php
new file mode 100644
index 00000000..4f4d5aca
--- /dev/null
+++ b/src/Bigcommerce/Api/Resources/Wishlist.php
@@ -0,0 +1,47 @@
+<?php
+
+
+namespace Bigcommerce\Api\Resources;
+
+use Bigcommerce\Api\Resource;
+use Bigcommerce\Api\Client;
+
+class Wishlist extends Resource
+{
+    protected $ignoreOnCreate = array(
+        'id',
+    );
+
+    protected $ignoreOnUpdate = array(
+        'id',
+    );
+
+    public $urls = array(
+        "v3" => "/wishlists"
+    );
+
+    public function create($version = "v3")
+    {
+        return Client::createWishlist($this->getCreateFields(), $version);
+    }
+
+    public function update($version = "v3")
+    {
+        return Client::updateWishlist($this->id, $this->getUpdateFields(), $version);
+    }
+
+    public function delete($version = "v3")
+    {
+        return Client::deleteWishlist($this->id, $version);
+    }
+
+    public function addItems($object, $version = "v3")
+    {
+        return Client::createWishlistItems($this->id, $object, $version);
+    }
+
+    public function toJson()
+    {
+        return parent::toJson();
+    }
+}
diff --git a/test/Unit/Api/ClientErrorTest.php b/test/Unit/Api/ClientErrorTest.php
index 47a22b89..c88a341f 100644
--- a/test/Unit/Api/ClientErrorTest.php
+++ b/test/Unit/Api/ClientErrorTest.php
@@ -1,5 +1,5 @@
 <?php
-namespace Bigcommerce\Unit\Api;
+namespace Bigcommerce\Test\Unit\Api;
 
 use Bigcommerce\Api\ClientError;
 use PHPUnit\Framework\TestCase;
diff --git a/test/Unit/Api/ConnectionTest.php b/test/Unit/Api/ConnectionTest.php
index b0d8b100..0d4a123a 100644
--- a/test/Unit/Api/ConnectionTest.php
+++ b/test/Unit/Api/ConnectionTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Bigcommerce\Test\Unit;
+namespace Bigcommerce\Test\Unit\Api;
 
 use Bigcommerce\Api\Connection;
 use PHPUnit\Framework\TestCase;
diff --git a/test/Unit/Api/ErrorTest.php b/test/Unit/Api/ErrorTest.php
index 6c8c1681..b485ae03 100644
--- a/test/Unit/Api/ErrorTest.php
+++ b/test/Unit/Api/ErrorTest.php
@@ -1,5 +1,5 @@
 <?php
-namespace Bigcommerce\Test\Unit;
+namespace Bigcommerce\Test\Unit\Api;
 
 use Bigcommerce\Api\Error;
 use PHPUnit\Framework\TestCase;
diff --git a/test/Unit/Api/FilterTest.php b/test/Unit/Api/FilterTest.php
index 5f1cc296..7d976e5f 100644
--- a/test/Unit/Api/FilterTest.php
+++ b/test/Unit/Api/FilterTest.php
@@ -1,5 +1,5 @@
 <?php
-namespace Bigcommerce\Unit\Api;
+namespace Bigcommerce\Test\Unit\Api;
 
 use Bigcommerce\Api\Filter;
 use PHPUnit\Framework\TestCase;
diff --git a/test/Unit/Api/NetworkErrorTest.php b/test/Unit/Api/NetworkErrorTest.php
index f456cb8c..f2961223 100644
--- a/test/Unit/Api/NetworkErrorTest.php
+++ b/test/Unit/Api/NetworkErrorTest.php
@@ -1,5 +1,5 @@
 <?php
-namespace Bigcommerce\Unit\Api;
+namespace Bigcommerce\Test\Unit\Api;
 
 use Bigcommerce\Api\NetworkError;
 use PHPUnit\Framework\TestCase;
diff --git a/test/Unit/Api/ServerErrorTest.php b/test/Unit/Api/ServerErrorTest.php
index 91d46552..17c7c55c 100644
--- a/test/Unit/Api/ServerErrorTest.php
+++ b/test/Unit/Api/ServerErrorTest.php
@@ -1,5 +1,5 @@
 <?php
-namespace Bigcommerce\Unit\Api;
+namespace Bigcommerce\Test\Unit\Api;
 
 use Bigcommerce\Api\ServerError;
 use PHPUnit\Framework\TestCase;