Moved all extension methods into extension blocks (#1155)

app/MindWork AI Studio/Provider/OpenAI/SystemPromptRoleExtensions.cs

@@ -4,22 +4,25 @@ namespace AIStudio.Provider.OpenAI;
 
 public static class SystemPromptRoleExtensions
 {
-    /// <summary>
-    /// Spells a system prompt role the way OpenAI's APIs expect it.
-    /// </summary>
-    /// <remarks>
-    /// A role no rule states becomes "developer". OpenAI's current documentation names no other, a
-    /// model the rules do not know is almost always one released after they were written, and the
-    /// older generations which still want "system" say so in their families.
-    /// </remarks>
     /// <param name="role">The role the model profile states.</param>
-    /// <returns>The role, as OpenAI names it.</returns>
-    public static string ToOpenAIRole(this SystemPromptRole role) => role switch
+    extension(SystemPromptRole role)
     {
-        SystemPromptRole.SYSTEM => "system",
-        SystemPromptRole.DEVELOPER => "developer",
-        SystemPromptRole.USER => "user",
+        /// <summary>
+        /// Spells a system prompt role the way OpenAI's APIs expect it.
+        /// </summary>
+        /// <remarks>
+        /// A role no rule states becomes "developer". OpenAI's current documentation names no other, a
+        /// model the rules do not know is almost always one released after they were written, and the
+        /// older generations which still want "system" say so in their families.
+        /// </remarks>
+        /// <returns>The role, as OpenAI names it.</returns>
+        public string ToOpenAIRole() => role switch
+        {
+            SystemPromptRole.SYSTEM => "system",
+            SystemPromptRole.DEVELOPER => "developer",
+            SystemPromptRole.USER => "user",
 
-        _ => "developer",
-    };
+            _ => "developer",
+        };
+    }
 }