public function handle($request = null)
    {
        // Check if request was passed otherwise get it from the server
        if ($request === null || !$request instanceof Zend_Amf_Request) {
            $request = $this->getRequest();
        } else {
            $this->setRequest($request);
        }
        if ($this->isSession()) {
             // Check if a session is being sent from the amf call
             if (isset($_COOKIE[$this->_sessionName])) {
                 session_id($_COOKIE[$this->_sessionName]);
             }
        }

        // Check for errors that may have happend in deserialization of Request.
        try {
            // Take converted PHP objects and handle service call.
            // Serialize to Zend_Amf_response for output stream
            $this->_handle($request);
            $response = $this->getResponse();
        } catch (Exception $e) {
            // Handle any errors in the serialization and service  calls.
            require_once 'Zend/Amf/Server/Exception.php';
            throw new Zend_Amf_Server_Exception('Handle error: ' . $e->getMessage() . ' ' . $e->getLine(), 0, $e);
        }

        // Return the Amf serialized output string
        return $response;
    }