Kodeine\Metable\Metable::__isset PHP Method

    public function __isset($key)
    {
        // trait properties.
        if (starts_with($key, 'meta') || $key == 'query') {
            return isset($this->{$key});
        }
        // check parent first.
        if (parent::__isset($key) === true) {
            return true;
        }
        // lets check meta data.
        return isset($this->getMetaData()[$key]);
    }