public function getAllNodeIds()
    {
        $ret = [];
        foreach ($this->items as $item) {
          $ret[] = $item->getNodeId();
        }
        return $ret;
    }
public function getAllNodeIds()
    {
        $ret = [];
        foreach ($this->items as $item) {
          $ret[] = $item->getNodeId();
        }
        return $ret;
    }
public function getAllNodeIds ( ) { $ ret = [ ] ; foreach ( $ this -> items as $ item ) { $ ret [ ] = $ item -> getNodeId ( ) ; } return $ ret ; }
Get all node identifiers

@return int[]
Get all node identifiers