private function getCreateChangeSetHandler()
    {
        return function ($key, $value, $obj) {
            if (null !== $value) {
                $obj[$key] = $value;
            }
            return $obj;
        };
    }
private function getCreateChangeSetHandler()
    {
        return function ($key, $value, $obj) {
            if (null !== $value) {
                $obj[$key] = $value;
            }
            return $obj;
        };
    }
private function getCreateChangeSetHandler ( ) { return function ( $ key , $ value , $ obj ) { if ( null !== $ value ) { $ obj [ $ key ] = $ value ; } return $ obj ; } ; }
Gets the change set handler Closure for create.

@return  Closure
Gets the change set handler Closure for create .