feat: Add output schema support to MCP tools

Author: bigdevlarry

examples/server/conformance/Elements.php

@@ -11,7 +11,6 @@
 
 namespace Mcp\Example\Server\Conformance;
 
-use Mcp\Schema\Content\Content;
 use Mcp\Schema\Content\EmbeddedResource;
 use Mcp\Schema\Content\ImageContent;
 use Mcp\Schema\Content\PromptMessage;
@@ -29,9 +28,6 @@ final class Elements
     // Sample base64 encoded minimal WAV file for testing
     public const TEST_AUDIO_BASE64 = 'UklGRiYAAABXQVZFZm10IBAAAAABAAEAQB8AAAB9AAACABAAZGF0YQIAAAA=';
 
-    /**
-     * @return CallToolResult[]
-     */
     public function toolMultipleTypes(): CallToolResult
     {
         return new CallToolResult([