void UpdateTensorListTypes(
    const llvm::SmallSet<int, 4> &tensor_list_index,
    const llvm::SmallSet<int, 4> &resized_tensor_list_index,
    ArrayRef<Type> types, R &&range, ValueRange operands,
    llvm::SmallVectorImpl<Type> *updated_types) {
  int i = 0;
  for (const auto it : llvm::zip(types, range, operands)) {
    if (tensor_list_index.count(i)) {
      // Only change the tensorlist's type to unranked tensor if it has been

  return GetTensorFeatureDimIndex(input_ty.getRank(), format);
}

// Gets all integer values from the given attribute and push them to `values`.
void GetI64ArrayAttrValues(Attribute attr, SmallVectorImpl<int64_t> *values) {
  auto array_attr = mlir::cast<ArrayAttr>(attr);
  values->reserve(array_attr.getValue().size());
  for (Attribute val : array_attr.getValue())

    // values, respectively.
    bool GetSlicedShapeAndBoundRanges(
      ::llvm::SmallVectorImpl<int64_t> *input_shape,
      ::llvm::SmallVectorImpl<int64_t> *slice_begin,
      ::llvm::SmallVectorImpl<int64_t> *slice_end,
      ::llvm::SmallVectorImpl<int64_t> *slice_stride);
  }];
}

def TF_StringJoinOp : TF_Op<"StringJoin", [Pure]> {
  let summary = [{

    absl::flat_hash_map<ValuePort, Attribute, ValuePortHasher>;
using ComputedQueryFn = function_ref<bool(ValuePort)>;
using ValueQueryFn = function_ref<Attribute(const ValuePort&)>;
using ValuePortInputs = SmallVectorImpl<ValuePort>;

// Note: Following implements the rank 1 pack op case so could be
// generalized.
//
// Maps the specified component in the `port` of the given op's result to one of
// the element in the input.