Add magic getter for response object

src/AbstractMiddleware.php

@@ -38,7 +38,7 @@ abstract class AbstractMiddleware implements MiddlewareInterface
     /**
      * The PSR-15 Server Request Handler.
      */
-    protected RequestHandlerInterface $handler;
+    protected QueueRequestHandler $requestHandler;
 
     /**
      * Process an incoming server request and produce a response.
@@ -51,7 +51,8 @@ abstract class AbstractMiddleware implements MiddlewareInterface
      */
     final public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
     {
-        $this->handler = $handler;
+        /** @var QueueRequestHandler $handler */
+        $this->requestHandler = $handler;
         // Manipulate request if necessary.
         $request = $this->processRequest($request);
         // Delegate request to next middleware and get response.

src/QueueRequestHandler.php

@@ -163,6 +163,17 @@ class QueueRequestHandler implements RequestHandlerInterface
         return $this->request;
     }
 
+    /**
+     * Magic getter method for $this->response.
+     * @see Getter
+     *
+     * @return ResponseInterface The PSR-7 response
+     */
+    protected function magicGetResponse(): ResponseInterface
+    {
+        return $this->response;
+    }
+
     /**
      * Create a queue-based PSR-15 HTTP Server Request Handler.
      *