fix: Fixed missing default values for query parameters.

src/libs/OpenApiGenerator.Core/Generation/Sources.Methods.cs

@@ -117,10 +117,12 @@ public static string GenerateMethod(
         /// <exception cref=""global::System.InvalidOperationException""></exception>
         {(endPoint.IsDeprecated ? "[global::System.Obsolete(\"This method marked as deprecated.\")]" : " ")}
         public async {taskType} {endPoint.MethodName}(
-{endPoint.Properties.Where(x => x.ParameterLocation != null).Select(x => $@"
+{endPoint.Properties.Where(x => x is { ParameterLocation: not null, IsRequired: true }).Select(x => $@"
             {x.Type.CSharpType} {x.ParameterName},").Inject()}
 {(string.IsNullOrWhiteSpace(endPoint.RequestType.CSharpType) ? " " : @$" 
             {endPoint.RequestType.CSharpTypeWithoutNullability} request,")}
+{endPoint.Properties.Where(x => x is { ParameterLocation: not null, IsRequired: false }).Select(x => $@"
+            {x.Type.CSharpType} {x.ParameterName} = {x.ParameterDefaultValue},").Inject()}
             {cancellationTokenAttribute}global::System.Threading.CancellationToken cancellationToken = default)
         {{
 {(string.IsNullOrWhiteSpace(endPoint.RequestType.CSharpType) || endPoint.RequestType.IsAnyOf ? " " : @" 

src/libs/OpenApiGenerator.Core/Models/TypeData.cs

@@ -220,7 +220,7 @@ public static string GetCSharpType(SchemaContext context, SchemaContext? additio
             ("integer", "int64") => ("long", false),
             ("number", "float") => ("float", false),
             ("number", "double") => ("double", false),
-            ("string", "byte") => ("byte[]", false),
+            ("string", "byte") => ("byte[]", true),
             ("string", "binary") => ("byte[]", true),
             ("string", "date") => ("global::System.DateTime", false),
             ("string", "date-time") => ("global::System.DateTime", false),

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.ChatClient.V1J2UltraChat.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2UltraChatResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.ChatResponse> V1J2UltraChatAsync(
-            string? model,
             global::G.LanguageStudioApiServerDataTypesJ2ChatChatRequest request,
+            string? model = "j2-ultra",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2GrandeComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2GrandeCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2GrandeCompleteResponse> V1J2GrandeCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-grande",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2GrandeCustomModelComplete.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2GrandeCustomModelCompleteResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2GrandeCustomModelCompleteResponse> V1J2GrandeCustomModelCompleteAsync(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-grande",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2GrandeInstructComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2GrandeInstructCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2GrandeInstructCompleteResponse> V1J2GrandeInstructCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-grande-instruct",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2JumboComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2JumboCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2JumboCompleteResponse> V1J2JumboCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-jumbo",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2JumboComplete2.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2JumboComplete2ResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2JumboCompleteResponse2> V1J2JumboComplete2Async(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-jumbo",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2JumboInstructComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2JumboInstructCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2JumboInstructCompleteResponse> V1J2JumboInstructCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-jumbo-instruct",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2LargeComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2LargeCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2LargeCompleteResponse> V1J2LargeCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-large",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2LargeCustomModelComplete.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2LargeCustomModelCompleteResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2LargeCustomModelCompleteResponse> V1J2LargeCustomModelCompleteAsync(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-large",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2LargeInstructComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2LargeInstructCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2LargeInstructCompleteResponse> V1J2LargeInstructCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-large-instruct",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2LightComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2LightCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2LightCompleteResponse> V1J2LightCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-light",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2LightCustomModelComplete.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2LightCustomModelCompleteResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2LightCustomModelCompleteResponse> V1J2LightCustomModelCompleteAsync(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-light",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2MidComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2MidCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2MidCompleteResponse> V1J2MidCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-mid",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2MidCustomModelComplete.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2MidCustomModelCompleteResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2MidCustomModelCompleteResponse> V1J2MidCustomModelCompleteAsync(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-mid",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2UltraComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2UltraCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2UltraCompleteResponse> V1J2UltraCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-ultra",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CompletionClient.V1J2UltraComplete2.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2UltraComplete2ResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2UltraCompleteResponse2> V1J2UltraComplete2Async(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-ultra",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.CustomModelsClient.V1GetCustomModels.g.verified.cs

@@ -31,7 +31,7 @@ partial void ProcessV1GetCustomModelsResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1GetCustomModelsResponse> V1GetCustomModelsAsync(
-            bool includeMetadata,
+            bool includeMetadata = false,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             PrepareArguments(

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/NewtonsoftJson/_#G.LibraryManagementClient.V1LibraryManagement.g.verified.cs

@@ -51,12 +51,12 @@ partial void ProcessV1LibraryManagementResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::System.Collections.Generic.IList<global::G.FileResponse>> V1LibraryManagementAsync(
-            string? name,
-            string? path,
-            global::G.FileStatus? status,
-            global::System.Collections.Generic.IList<string>? label,
-            int limit,
-            int offset,
+            string? name = default,
+            string? path = default,
+            global::G.FileStatus? status = default,
+            global::System.Collections.Generic.IList<string>? label = default,
+            int limit = 1000,
+            int offset = default,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             PrepareArguments(

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.ChatClient.V1J2UltraChat.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2UltraChatResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.ChatResponse> V1J2UltraChatAsync(
-            string? model,
             global::G.LanguageStudioApiServerDataTypesJ2ChatChatRequest request,
+            string? model = "j2-ultra",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.CompletionClient.V1J2GrandeComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2GrandeCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2GrandeCompleteResponse> V1J2GrandeCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-grande",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.CompletionClient.V1J2GrandeCustomModelComplete.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2GrandeCustomModelCompleteResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2GrandeCustomModelCompleteResponse> V1J2GrandeCustomModelCompleteAsync(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-grande",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.CompletionClient.V1J2GrandeInstructComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2GrandeInstructCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2GrandeInstructCompleteResponse> V1J2GrandeInstructCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-grande-instruct",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.CompletionClient.V1J2JumboComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2JumboCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2JumboCompleteResponse> V1J2JumboCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-jumbo",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.CompletionClient.V1J2JumboComplete2.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2JumboComplete2ResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2JumboCompleteResponse2> V1J2JumboComplete2Async(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-jumbo",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.CompletionClient.V1J2JumboInstructComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2JumboInstructCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2JumboInstructCompleteResponse> V1J2JumboInstructCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-jumbo-instruct",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.CompletionClient.V1J2LargeComplete.g.verified.cs

@@ -34,8 +34,8 @@ partial void ProcessV1J2LargeCompleteResponseContent(
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2LargeCompleteResponse> V1J2LargeCompleteAsync(
-            string? model,
             global::G.CompletionBody request,
+            string? model = "j2-large",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));

src/tests/OpenApiGenerator.SnapshotTests/Snapshots/Ai21/SystemTextJson/_#G.CompletionClient.V1J2LargeCustomModelComplete.g.verified.cs

@@ -38,8 +38,8 @@ partial void ProcessV1J2LargeCustomModelCompleteResponseContent(
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::G.V1J2LargeCustomModelCompleteResponse> V1J2LargeCustomModelCompleteAsync(
             string customModelName,
-            string? customModelType,
             global::G.CompletionBody request,
+            string? customModelType = "j2-large",
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             request = request ?? throw new global::System.ArgumentNullException(nameof(request));