public static function belongsTo($modelClass, $columnName, $options = []) {
        $options['type'] = self::BELONGS_TO;
        $options['modelClass'] = $modelClass;
        $options['compares'] = [[(false === strpos($columnName, '.')) ? "t.$columnName" : $columnName, "r." . $modelClass::getDb()->getTablePk($modelClass::getTableName()), "="]];
        return new self($options);
    }