From 5091d510b50c0c74973eb5e519627b8ad0528df1 Mon Sep 17 00:00:00 2001
From: Kavin <kavinsingh@microsoft.com>
Date: Wed, 11 Dec 2024 13:25:06 -0800
Subject: [PATCH] fix warnings

---
 .../Microsoft.TeamsAI/AI/Models/SequenceBuilder.cs          | 6 +++---
 .../AI/Models/StreamingChatToolCallsBuilder.cs              | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/AI/Models/SequenceBuilder.cs b/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/AI/Models/SequenceBuilder.cs
index 17105b53a..979105d67 100644
--- a/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/AI/Models/SequenceBuilder.cs
+++ b/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/AI/Models/SequenceBuilder.cs
@@ -3,10 +3,10 @@
 
 namespace Microsoft.Teams.AI.AI.Models
 {
-    public class SequenceBuilder<T>
+    internal class SequenceBuilder<T>
     {
-        private Segment _first;
-        private Segment _last;
+        private Segment? _first;
+        private Segment? _last;
 
         public void Append(ReadOnlyMemory<T> data)
         {
diff --git a/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/AI/Models/StreamingChatToolCallsBuilder.cs b/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/AI/Models/StreamingChatToolCallsBuilder.cs
index a43b78527..78b1f23b7 100644
--- a/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/AI/Models/StreamingChatToolCallsBuilder.cs
+++ b/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/AI/Models/StreamingChatToolCallsBuilder.cs
@@ -3,7 +3,7 @@
 
 namespace Microsoft.Teams.AI.AI.Models
 {
-    public class StreamingChatToolCallsBuilder
+    internal class StreamingChatToolCallsBuilder
     {
         private readonly Dictionary<int, string> _indexToToolCallId = new();
         private readonly Dictionary<int, string> _indexToFunctionName = new();