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

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

 public function __construct(IGenerator $outerIterator, IGenerator $innerIterator, callable $traversableFactory, callable $outerKeyFunction, callable $innerKeyFunction)
 {
     parent::__construct($outerIterator, $innerIterator, $traversableFactory);
     self::__constructJoinOnEqualityIterator($outerKeyFunction, $innerKeyFunction);
 }