protected function _getRules() {
        $relation = $this->getRelation();
        $localModel = $relation->getLocalModel();

        $hasNameConflict = $relation->name === $localModel->id;
        if ($hasNameConflict) {
            return array($relation->name . '1', $relation->name . '2');
        }

        $modelIds = $this->_getModelIdsAlphabetically();

        $rules = array($relation->name, $this->_getSecondRule());
        $rules = $this->_sortRulesEgocentrically($rules);

        return $rules;
    }