Pinq\Iterators\Generators\JoinIterator::__construct PHP Метод

    public function __construct(IGenerator $outerIterator, IGenerator $innerIterator)
    {
        parent::__construct($outerIterator);
        self::__constructIterator();
        $this->outerIterator =& $this->iterator;
        $this->innerIterator = $innerIterator;
    }

 public function __construct(IGenerator $outerIterator, IGenerator $innerIterator, callable $filter)
 {
     parent::__construct($outerIterator, $innerIterator);
     self::__constructJoinOnIterator($filter);
 }