fix: mark nullable property as nullable (#305)

Author: stainless-app[bot]

bulkresult.go

@@ -205,7 +205,7 @@ type BulkResultEntity struct {
 	// transaction. A `credit` moves money from your account to someone else's. A
 	// `debit` pulls money from someone else's account to your own. Note that wire,
 	// rtp, and check payments will always be `credit`.
-	Direction   string    `json:"direction"`
+	Direction   string    `json:"direction,nullable"`
 	DiscardedAt time.Time `json:"discarded_at,nullable" format:"date-time"`
 	// The timestamp (ISO8601 format) at which the ledger transaction happened for
 	// reporting purposes.

paymentorder.go

@@ -652,7 +652,7 @@ type PaymentOrderUltimateOriginatingAccount struct {
 	// This field can have the runtime type of [map[string]string].
 	Metadata interface{} `json:"metadata,required"`
 	// The name of the virtual account.
-	Name   string `json:"name,required"`
+	Name   string `json:"name,required,nullable"`
 	Object string `json:"object,required"`
 	// This field can have the runtime type of [[]RoutingDetail].
 	RoutingDetails interface{} `json:"routing_details,required"`