improved ToString implementations overriden in a previous PR

src/Custom/Chat/ChatCompletion.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Text;
 
 namespace OpenAI.Chat;
 
@@ -65,5 +66,19 @@ public partial class ChatCompletion
     /// Returns text representation of the first part of the first choice.
     /// </summary>
     /// <returns></returns>
-    public override string ToString() => Content[0].Text;
+    public override string ToString()
+    {
+        IReadOnlyList<ChatMessageContentPart> content = Content;
+        if (content.Count == 1)
+        {
+            return content[0].ToString();
+        }
+
+        StringBuilder sb = new();
+        foreach (var part in content)
+        {
+            sb.AppendLine(part.ToString());
+        }
+        return sb.ToString();
+    }
 }

src/Custom/Chat/ChatMessageContentPart.cs

@@ -129,7 +129,13 @@ public static ChatMessageContentPart CreateImageMessageContentPart(BinaryData im
     /// Returns text representation of this part.
     /// </summary>
     /// <returns></returns>
-    public override string ToString() => Text;
+    public override string ToString()
+    {
+        if (Kind == ChatMessageContentPartKind.Text) {
+            return String.IsNullOrWhiteSpace(Text) ? "<empty>" : Text;
+        }
+        return $"<{Kind.ToString().ToLowerInvariant()}>";
+    }
 
     /// <summary>
     /// Implicitly creates a new <see cref="ChatMessageContentPart"/> instance from an item of plain text.