protected function _getOperationName()
    {
        $operation = lcfirst($this->_getContainer()->getConfig()->getRequestParameter('operation'));

        if (method_exists($this->_getContainer()->getClient(), $operation)) {
            return $operation;
        }

        $this->setViewData(array('sError' => "Operation '{$operation}' does not exist"));
        return false;
    }