Scalr\Service\Aws\AbstractDataType::__unset PHP 메소드

    public function __unset($name)
    {
        if (in_array($name, $this->_properties) && isset($this->propertiesData[$name])) {
            unset($this->propertiesData[$name]);
        } else {
            throw new \InvalidArgumentException(sprintf('Unknown property "%s" for the object %s', $name, get_class($this)));
        }
    }