/** * @param $onTableAliasName * @return null|string */ protected function addLeftJoinsForAttributeThatIsCastedUp($onTableAliasName) { $modelClassName = $this->modelAttributeToDataProviderAdapter->getResolvedModelClassName(); $attributeModelClassName = $this->modelAttributeToDataProviderAdapter->getAttributeModelClassName(); return $this->resolveAndProcessLeftJoinsForAttributeThatIsCastedUp($onTableAliasName, $modelClassName, $attributeModelClassName); }