public function fromArray($options)
    {
        if (isset($options['Index'])) {
            Validate::isInteger($options['Index'], 'options[Index]');
            $this->_index = (int) $options['Index'];
        }

        if (isset($options['Language'])) {
            Validate::isString($options['Language'], 'options[Language]');
            $this->_language = $options['Language'];
        }
    }