Added attribute "JsonIgnore" for ImageRequestOptions

Author: YarikVor

ManagedCode.OpenAI/ImageGenerator/Builders/ImageGeneratorRequestBuilder.cs

@@ -15,7 +15,7 @@ public class ImageGeneratorRequestBuilder
     public const string URL_EDITS = "images/generations";
 
     private OpenAIClient _client;
-    private ImageRequestOptions _request;
+    private ImageRequestOptions _request = new ImageRequestOptions();
 
     public ImageGeneratorRequestBuilder(OpenAIClient client)
     {

ManagedCode.OpenAI/ImageGenerator/Manager/ImageManager.cs

@@ -26,7 +26,7 @@ public ImageManager<T> Prompt(string prompt)
         return this;
     }
 
-    public async Task<T> GetResultAsStringAsync()
+    public async Task<T> GetResultAsync()
     {
 
         var httpResponseMessage = await _client.PostAsJsonAsync(

ManagedCode.OpenAI/ImageGenerator/Models/ImageRequestOptions.cs

@@ -9,15 +9,19 @@ public class ImageRequestOptions : ICloneable<ImageRequestOptions>, IDeepCloneab
     [JsonPropertyName("prompt")] 
     public string Prompt { get; set; }
 
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     [JsonPropertyName("n")] 
     public int? N  { get; set; }
 
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     [JsonPropertyName("size")]
     public ImageResolution? Size  { get; set; }
 
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     [JsonPropertyName("response_format")]
     public ImageFormat? ResponseFormat  { get; set; }
 
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     [JsonPropertyName("user")]
     public string? User  { get; set; }