From 3bb50a63500799deb8fd762ab65dcc1711efe7af Mon Sep 17 00:00:00 2001
From: Jicheng Lu <103353@smsassist.com>
Date: Wed, 28 May 2025 18:00:11 -0500
Subject: [PATCH] nullable

---
 .../Agents/Models/AgentUtility.cs             | 36 ++-----------------
 .../Models/AgentUtilityMongoElement.cs        |  2 +-
 .../Functions/OutboundPhoneCallFn.cs          |  1 -
 3 files changed, 4 insertions(+), 35 deletions(-)

diff --git a/src/Infrastructure/BotSharp.Abstraction/Agents/Models/AgentUtility.cs b/src/Infrastructure/BotSharp.Abstraction/Agents/Models/AgentUtility.cs
index 8fc44d7c..6233dfa7 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Agents/Models/AgentUtility.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Agents/Models/AgentUtility.cs
@@ -26,7 +26,8 @@ public class AgentUtility
 public class UtilityItem
 {
     [JsonPropertyName("function_name")]
-    public string FunctionName { get; set; } = string.Empty;
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    public string? FunctionName { get; set; }
 
     [JsonPropertyName("template_name")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
@@ -35,35 +36,4 @@ public class UtilityItem
     [JsonPropertyName("visibility_expression")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public string? VisibilityExpression { get; set; }
-}
-
-//public class UtilityFunction : UtilityBase
-//{
-//    public UtilityFunction()
-//    {
-        
-//    }
-
-//    public UtilityFunction(string name)
-//    {
-//        Name = name;
-//    }
-//}
-
-//public class UtilityTemplate : UtilityBase
-//{
-//    public UtilityTemplate()
-//    {
-        
-//    }
-
-//    public UtilityTemplate(string name)
-//    {
-//        Name = name;
-//    }
-//}
-
-//public class UtilityBase
-//{
-//    public string Name { get; set; }
-//}
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/Plugins/BotSharp.Plugin.MongoStorage/Models/AgentUtilityMongoElement.cs b/src/Plugins/BotSharp.Plugin.MongoStorage/Models/AgentUtilityMongoElement.cs
index d7ab6d2a..be052a1e 100644
--- a/src/Plugins/BotSharp.Plugin.MongoStorage/Models/AgentUtilityMongoElement.cs
+++ b/src/Plugins/BotSharp.Plugin.MongoStorage/Models/AgentUtilityMongoElement.cs
@@ -48,7 +48,7 @@ public class AgentUtilityMongoElement
 
 public class AgentUtilityItemMongoElement
 {
-    public string FunctionName { get; set; } = string.Empty;
+    public string? FunctionName { get; set; }
     public string? TemplateName { get; set; }
     public string? VisibilityExpression { get; set; }
 }
\ No newline at end of file
diff --git a/src/Plugins/BotSharp.Plugin.Twilio/OutboundPhoneCallHandler/Functions/OutboundPhoneCallFn.cs b/src/Plugins/BotSharp.Plugin.Twilio/OutboundPhoneCallHandler/Functions/OutboundPhoneCallFn.cs
index 88586ea8..5ffd692e 100644
--- a/src/Plugins/BotSharp.Plugin.Twilio/OutboundPhoneCallHandler/Functions/OutboundPhoneCallFn.cs
+++ b/src/Plugins/BotSharp.Plugin.Twilio/OutboundPhoneCallHandler/Functions/OutboundPhoneCallFn.cs
@@ -1,5 +1,4 @@
 using BotSharp.Abstraction.Files;
-using BotSharp.Abstraction.Files.Models;
 using BotSharp.Abstraction.Infrastructures.Enums;
 using BotSharp.Abstraction.Options;
 using BotSharp.Abstraction.Routing;