Storm\Core\Relational\ITable::PrimaryKey PHP Method

    public function PrimaryKey(array $Data = []);

 /**
  * {@inheritDoc}
  */
 public final function MapIdentitiesToPrimaryKeys(array $Identities)
 {
     $PrimaryKeys = array_map(function () {
         return $this->PrimaryKeyTable->PrimaryKey();
     }, $Identities);
     foreach ($this->IdentityPropertyPrimaryKeyMappings as $Mapping) {
         $Mapping->Persist($Identities, $PrimaryKeys);
     }
     return $PrimaryKeys;
 }