public function readAmf3TypeMarker()
    {
        require_once 'Zend/Amf/Parse/Amf3/Deserializer.php';
        $deserializer = new Zend_Amf_Parse_Amf3_Deserializer($this->_stream);
        $this->_objectEncoding = Zend_Amf_Constants::AMF3_OBJECT_ENCODING;
        return $deserializer->readTypeMarker();
    }