function getSqlTypes()
 {
     return $this->fkType->getSqlTypes();
 }
 private function makeFields($propertyName, OrmPropertyType $ormPropertyTpe)
 {
     $fields = array();
     $propertyPrefix = strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', $propertyName));
     foreach (array_keys($ormPropertyTpe->getSqlTypes()) as $key) {
         $fields[] = $propertyPrefix . (!is_int($key) || $key > 0 ? '_' . $key : '');
     }
     return $fields;
 }