protected function _getWpHandlerWrapper($name, $callback)
    {
        $cbHash = $this->_hashWpHandler($name, $callback);

        // Create if not exists
        if (!isset($this->handlerWrappers[$cbHash])) {
            $this->handlerWrappers[$cbHash] = $this->_createWpHandlerWrapper(
                $name,
                $callback,
                $this->_getThrowOnPropStop()
            );
        }

        return $this->handlerWrappers[$cbHash];
    }