protected function _displayError($error, $debug)
    {
        $message = sprintf(
            '%s in [%s, line %s]',
            $error['description'],
            $error['file'],
            $error['line']
        );
        $message = sprintf(
            "<error>%s Error:</error> %s\n",
            $error['error'],
            $message
        );
        $this->_stderr->write($message);
    }