// Check that we have a constant operand on one side (candidate for identity).
  const bool is_commutative =
      (std::is_same<OpT, AddV2Op>::value || std::is_same<OpT, MulOp>::value);
  auto lhs_attr = mlir::dyn_cast_or_null<DenseElementsAttr>(operands[0]);
  auto rhs_attr = mlir::dyn_cast_or_null<DenseElementsAttr>(operands[1]);
  if (!rhs_attr && !(is_commutative && lhs_attr)) return {};

  op_list.ParseFromArray(op_list_buffer->data, op_list_buffer->length);
  bool found = false;
  for (const auto& op : op_list.op()) {
    if (op.name() == "AttributeAccessorsOp") {
      ASSERT_TRUE(op.is_commutative());
      ASSERT_TRUE(op.is_aggregate());
      ASSERT_TRUE(op.allows_uninitialized_input());
      ASSERT_EQ(4, op.deprecation().version());
      ASSERT_EQ(deprecation_msg, op.deprecation().explanation());

// Sets the commutative property for the op built by the given builder.
TF_CAPI_EXPORT extern void TF_OpDefinitionBuilderSetIsCommutative(
    TF_OpDefinitionBuilder* builder, bool is_commutative);

// Sets the is_aggregate property of the builder to the given value.
//
// If is_aggregate is true, then the operation produced by this builder accepts

              type: DT_INT16
              type: DT_INT32
              type: DT_INT64
              type: DT_COMPLEX64
              type: DT_COMPLEX128
            }
          }
        }
        is_commutative: true
      }
      op {
        name: "NoOp"
      }
      op {
        name: "Pack"
        input_arg {
          name: "values"
          type_attr: "T"
          number_attr: "N"