}

    private ListIterator<T> iteratorAt(int index) {
        ListIterator<T> iterator = listIterator();
        while (iterator.previousIndex() < index && iterator.hasNext()) {
            iterator.next();
        }
        return iterator;
    }

    @Override
    public void add(int index, T element) {
        modCount++;
        ListIterator<T> iterator = iteratorAt(index - 1);

   */
  public static boolean elementsEqual(Iterator<?> iterator1, Iterator<?> iterator2) {
    while (iterator1.hasNext()) {
      if (!iterator2.hasNext()) {
        return false;
      }
      Object o1 = iterator1.next();
      Object o2 = iterator2.next();
      if (!Objects.equal(o1, o2)) {
        return false;
      }
    }
    return !iterator2.hasNext();
  }

  /**

   */
  public static boolean elementsEqual(Iterator<?> iterator1, Iterator<?> iterator2) {
    while (iterator1.hasNext()) {
      if (!iterator2.hasNext()) {
        return false;
      }
      Object o1 = iterator1.next();
      Object o2 = iterator2.next();
      if (!Objects.equal(o1, o2)) {
        return false;
      }
    }
    return !iterator2.hasNext();
  }

  /**

{control_outputs = "IteratorGetNext,IteratorGetNext_1,CrossReplicaSum,AssignAddVariableOp,CrossReplicaSum_1,AssignAddVariableOp_1,CrossReplicaSum_2,AssignAddVariableOp_2,CrossReplicaSum_3,AssignAddVariableOp_3", inputs = "iterator,iterator_1,iterator_2,iterator_3,iterator_4,iterator_5,resnet50_conv1_conv2d_conv1_kernel_140365606309224_handle_inputs_0,resnet50_fc1000_matmul_fc1000_kernel_140365944145960_handle_inputs_0,resnet50_fc1000_biasadd_fc1000_bias_140365944146240_handle_inputs_0,total_14036632...

    Iterator<T> iteratorA = iterableA.iterator();
    Iterator<T> iteratorB = iterableB.iterator();

    while (iteratorA.hasNext() && iteratorB.hasNext()) {
      if (!elementEquivalence.equivalent(iteratorA.next(), iteratorB.next())) {
        return false;
      }
    }

    return !iteratorA.hasNext() && !iteratorB.hasNext();
  }

  @Override

      }

      @Override
      Iterator<E> elementIterator() {
        throw new AssertionError("should never be called");
      }

      @Override
      Iterator<Entry<E>> entryIterator() {
        final Iterator<? extends Entry<? extends E>> iterator1 = multiset1.entrySet().iterator();
        final Iterator<? extends Entry<? extends E>> iterator2 = multiset2.entrySet().iterator();

      }

      @Override
      Iterator<E> elementIterator() {
        throw new AssertionError("should never be called");
      }

      @Override
      Iterator<Entry<E>> entryIterator() {
        final Iterator<? extends Entry<? extends E>> iterator1 = multiset1.entrySet().iterator();
        final Iterator<? extends Entry<? extends E>> iterator2 = multiset2.entrySet().iterator();

    Iterator<T> iteratorA = iterableA.iterator();
    Iterator<T> iteratorB = iterableB.iterator();

    while (iteratorA.hasNext() && iteratorB.hasNext()) {
      if (!elementEquivalence.equivalent(iteratorA.next(), iteratorB.next())) {
        return false;
      }
    }

    return !iteratorA.hasNext() && !iteratorB.hasNext();
  }

  @Override

          CheckedDowncastToActualType<const Iterator>(&other)->iterator_;
    }

   private:
    Iterator(const Iterator& other)
          // The explicit constructor call suppresses a false warning
          // emitted by gcc when supplied with the -Wextra option.
        : ParamIteratorInterface<T>(),
          base_(other.base_),
          iterator_(other.iterator_) {}

          CheckedDowncastToActualType<const Iterator>(&other)->iterator_;
    }

   private:
    Iterator(const Iterator& other)
          // The explicit constructor call suppresses a false warning
          // emitted by gcc when supplied with the -Wextra option.
        : ParamIteratorInterface<T>(),
          base_(other.base_),
          iterator_(other.iterator_) {}