public function getMockedArgValue($elementName, $argName)
    {
        if (isset($this->_mockedArguments[$elementName]) && isset($this->_mockedArguments[$elementName][$argName])) {
            $response = $this->_mockedArguments[$elementName][$argName];
            if (is_callable($response)) {
                $response = call_user_func($response);
            }
            return $response;
        }
        
        return false;
    }