private function getRelationshipDeltas($key, Relationship $relationship, $new_value) { $this->getDriver()->debugLog('Getting inverse relationship deltas: ' . $key); if (RelationshipType::isMultiIndex($relationship->getRelationshipType())) { return $this->getRelationshipDeltasMulti($key, $new_value); } else { return $this->getRelationshipDeltasSingle($key, $new_value); } }