fix: Fixed issue with allOf'2 with nullable: true as one of item.

src/libs/AutoSDK/Helpers/OpenApi31Support.cs

@@ -302,6 +302,34 @@ private static void ConvertYamlNode(Dictionary<object, object?> node)
                 node[new string("exclusiveMaximum".ToCharArray())] = true;
             }
 
+            if (keyString == "allOf" &&
+                entry.Value is List<object?> { Count: 2 } allOfItems &&
+                allOfItems.Any(v =>
+                    v is Dictionary<object, object?> objects &&
+                    objects.ContainsKey("nullable") &&
+                    objects["nullable"] is true))
+            {
+                var first = allOfItems[0] as Dictionary<object, object?>;
+                var second = allOfItems[1] as Dictionary<object, object?>;
+
+                if (first?.ContainsKey("nullable") != true)
+                {
+                    foreach (var key in first ?? new Dictionary<object, object?>())
+                    {
+                        node[key.Key] = key.Value;
+                    }
+                }
+                else
+                {
+                    foreach (var key in second ?? new Dictionary<object, object?>())
+                    {
+                        node[key.Key] = key.Value;
+                    }
+                }
+
+                node.Remove(keyString);
+            }
+
             // Remove "prefixItems"
             if (keyString == "prefixItems" && entry.Value is List<object?> { Count: > 0 } prefixItemsList)
             {

src/tests/AutoSDK.SnapshotTests/Snapshots/Together/NewtonsoftJson/_#G.Models.ChatCompletionChoice.g.verified.cs

@@ -19,7 +19,7 @@ public sealed partial class ChatCompletionChoice
         /// 
         /// </summary>
         [global::Newtonsoft.Json.JsonProperty("finish_reason", Required = global::Newtonsoft.Json.Required.Always)]
-        public global::G.FinishReason2 FinishReason { get; set; } = default!;
+        public global::G.FinishReason FinishReason { get; set; } = default!;
 
         /// <summary>
         /// 

src/tests/AutoSDK.SnapshotTests/Snapshots/Together/NewtonsoftJson/_#G.Models.ChatCompletionChoicesDataItem.g.verified.cs

@@ -1,7 +1,5 @@
 //HintName: G.Models.ChatCompletionChoicesDataItem.g.cs
 
-#pragma warning disable CS0618 // Type or member is obsolete
-
 #nullable enable
 
 namespace G
@@ -15,7 +13,7 @@ public sealed partial class ChatCompletionChoicesDataItem
         /// 
         /// </summary>
         [global::Newtonsoft.Json.JsonProperty("finish_reason")]
-        public global::G.FinishReason2? FinishReason { get; set; }
+        public global::G.FinishReason? FinishReason { get; set; }
 
         /// <summary>
         /// 
@@ -27,7 +25,7 @@ public sealed partial class ChatCompletionChoicesDataItem
         /// 
         /// </summary>
         [global::Newtonsoft.Json.JsonProperty("logprobs")]
-        public global::G.AllOf<object, global::G.LogprobsPart>? Logprobs { get; set; }
+        public global::G.LogprobsPart? Logprobs { get; set; }
 
         /// <summary>
         /// 

src/tests/AutoSDK.SnapshotTests/Snapshots/Together/NewtonsoftJson/_#G.Models.ChatCompletionChunk.g.verified.cs

@@ -1,7 +1,5 @@
 //HintName: G.Models.ChatCompletionChunk.g.cs
 
-#pragma warning disable CS0618 // Type or member is obsolete
-
 #nullable enable
 
 namespace G
@@ -51,7 +49,7 @@ public sealed partial class ChatCompletionChunk
         /// 
         /// </summary>
         [global::Newtonsoft.Json.JsonProperty("usage")]
-        public global::G.AllOf<global::G.UsageData, object>? Usage { get; set; }
+        public global::G.UsageData? Usage { get; set; }
 
         /// <summary>
         /// Additional properties that are not explicitly defined in the schema

src/tests/AutoSDK.SnapshotTests/Snapshots/Together/NewtonsoftJson/_#G.Models.ChatCompletionChunkChoice.g.verified.cs

@@ -19,7 +19,7 @@ public sealed partial class ChatCompletionChunkChoice
         /// 
         /// </summary>
         [global::Newtonsoft.Json.JsonProperty("finish_reason", Required = global::Newtonsoft.Json.Required.Always)]
-        public global::G.FinishReason2 FinishReason { get; set; } = default!;
+        public global::G.FinishReason FinishReason { get; set; } = default!;
 
         /// <summary>
         /// 

src/tests/AutoSDK.SnapshotTests/Snapshots/Together/NewtonsoftJson/_#G.Models.CompletionChoicesDataItem.g.verified.cs

@@ -13,7 +13,7 @@ public sealed partial class CompletionChoicesDataItem
         /// 
         /// </summary>
         [global::Newtonsoft.Json.JsonProperty("finish_reason")]
-        public global::G.FinishReason2? FinishReason { get; set; }
+        public global::G.FinishReason? FinishReason { get; set; }
 
         /// <summary>
         /// 

src/tests/AutoSDK.SnapshotTests/Snapshots/Together/NewtonsoftJson/_#G.Models.CompletionChunk.g.verified.cs

@@ -1,7 +1,5 @@
 //HintName: G.Models.CompletionChunk.g.cs
 
-#pragma warning disable CS0618 // Type or member is obsolete
-
 #nullable enable
 
 namespace G
@@ -21,7 +19,7 @@ public sealed partial class CompletionChunk
         /// 
         /// </summary>
         [global::Newtonsoft.Json.JsonProperty("finish_reason", Required = global::Newtonsoft.Json.Required.Always)]
-        public global::G.AllOf<global::G.FinishReason2?, object> FinishReason { get; set; } = default!;
+        public global::G.FinishReason FinishReason { get; set; } = default!;
 
         /// <summary>
         /// 
@@ -45,7 +43,7 @@ public sealed partial class CompletionChunk
         /// 
         /// </summary>
         [global::Newtonsoft.Json.JsonProperty("usage", Required = global::Newtonsoft.Json.Required.Always)]
-        public global::G.AllOf<global::G.UsageData, object> Usage { get; set; } = default!;
+        public global::G.UsageData? Usage { get; set; } = default!;
 
         /// <summary>
         /// Additional properties that are not explicitly defined in the schema