regions.push_back(RegionSuccessor(
        &getNext(), getNext().front().getArguments().drop_back(n)));
  } else if (point.getRegionOrNull() == &getNext()) {
    // `next` branches to itself, or to `finalize`, passing all arguments given
    // to `next`s yield.

    // The number of values we're passing along.
    int num = getNext().front().getTerminator()->getNumOperands();

  llvm::SmallSet<int, 4> dynamic_arg_idx_set;
  if (dynamic_arg_idx) {
    for (auto idx : dynamic_arg_idx.getValue()) {
      dynamic_arg_idx_set.insert(mlir::dyn_cast<IntegerAttr>(idx).getInt());
    }
  }

  for (auto operand_type_and_idx : llvm::enumerate(op.getOperandTypes())) {
    Type operand_type = operand_type_and_idx.value();
    int index = operand_type_and_idx.index();

             generator_region.getInitFuncOtherArgs(),
             /*use_region_args=*/true, /*forward_block_args=*/false);
  CreateCall(generator_op, next_function, generator_region.getNext(),
             generator_region.getNextFuncOtherArgs(),
             /*use_region_args=*/true, /*forward_block_args=*/false);
  CreateCall(generator_op, finalize_function, generator_region.getFinalize(),

          op->emitOpError()
              << "is missing attribute '" << kCalledIndexAttrName << "'";
          return WalkResult::interrupt();
        }
        int called_index = called_index_attr.getInt();
        if (called_index < 0 || called_index >= function_list.size()) {
          op->emitOpError()
              << "references function #" << called_index

    Iterator<String> iterator = Collections.singletonList("foo").iterator();
    assertEquals("foo", Iterators.getNext(iterator, "bar"));
  }

  public void testGetNext_withDefault_empty() {
    Iterator<String> iterator = Iterators.emptyIterator();
    assertEquals("bar", Iterators.getNext(iterator, "bar"));
  }

  public void testGetNext_withDefault_empty_null() {

LogicalResult ConvertToI32Attr(IntegerAttr attr, IntegerAttr* attr_i32) {
  if (attr.getType().isInteger(/*width=*/32)) {
    *attr_i32 = attr;
    return success();
  }

  int64_t value = attr.getInt();
  if (value > std::numeric_limits<int>::max() ||
      value < std::numeric_limits<int>::min()) {
    return failure();
  }

  *attr_i32 = IntegerAttr::get(

    @Override
    public AntBuilder ant(Closure configureClosure) {
        return ConfigureUtil.configure(configureClosure, getAnt());
    }

    @Override
    public AntBuilder ant(Action<? super AntBuilder> configureAction) {
        AntBuilder ant = getAnt();
        configureAction.execute(ant);
        return ant;
    }

    @Override

  DCHECK(group_size_attr != nullptr)
      << "module attribute " << kGroupSizeAttrName
      << " is required for CollectiveInfo but not found.";
  int32_t group_key = group_key_attr.getInt();
  int32_t group_size = group_size_attr.getInt();
  VLOG(2) << "Populating CollectiveInfo: group_key=" << group_key
          << " group_size=" << group_size;
  compilation_result->collective_info = {group_key, group_size, 0};

  for (const Attribute& attr : op.getDeviceVarReadsIndices()) {
    read_array.insert(mlir::cast<IntegerAttr>(attr).getInt());
  }
  llvm::SmallSet<int, 8> update_array;
  for (const Attribute& attr : op.getDeviceVarUpdatesIndices()) {
    update_array.insert(mlir::cast<IntegerAttr>(attr).getInt());
  }

  for (auto& arg : op->getOpOperands()) {
    Value v = arg.get();

  for (int64_t i = 0; i < input_rank; ++i) {
    int64_t input_size = input_shape[i];
    int64_t start_index =
        constant_start_indices.getValues<IntegerAttr>()[i].getInt();
    int64_t slice_size = slice_sizes.getValues<IntegerAttr>()[i].getInt();
    normalized_sizes.push_back(slice_size == -1 ? input_size - start_index
                                                : slice_size);
  }