private function createId(array $tokens) {
        $idColumn = Identifier::column($tokens, new MetaData());
        return empty($this->result[$idColumn]) ? null : $this->result[$idColumn];
    }
private function createId(array $tokens) {
        $idColumn = Identifier::column($tokens, new MetaData());
        return empty($this->result[$idColumn]) ? null : $this->result[$idColumn];
    }
private function createId ( array $ tokens ) { $ idColumn = Identifier :: column ( $ tokens , new MetaData ( ) ) ; return empty ( $ this -> result [ $ idColumn ] ) ? null : $ this -> result [ $ idColumn ] ; }
returns the id

@param  array $tokens
@return mixed

@SuppressWarnings("PHPMD.StaticAccess")
returns the id