}
absl::Status SetAttrFunction(AbstractOperation* op_, const char* attr_name,
                             const AbstractOperation* value,
                             ForwardOperation* forward_op_) {
  return absl::UnimplementedError(
      "SetAttrFunction has not been implemented yet.");
}
absl::Status SetAttrFunctionName(AbstractOperation* op_, const char* attr_name,

  }
  absl::Status SetAttrFunctionList(
      const char* attr_name,
      absl::Span<const AbstractOperation*> values) override {
    return tensorflow::errors::Unimplemented(
        "SetAttrFunctionList has not been implemented yet.");
  }
  // For LLVM style RTTI.
  static bool classof(const AbstractOperation* ptr) {
    return ptr->getKind() == kGraph;
  }
  ~GraphOperation() override {}

 private:

                               const TFE_Op** value, int num_values) {
  auto s = tensorflow::unwrap(op)->SetAttrFunctionList(
      attr_name, {reinterpret_cast<const tensorflow::AbstractOperation**>(
                      tensorflow::unwrap(value)),
                  static_cast<size_t>(num_values)});
  if (!s.ok()) {
    LOG(WARNING) << "Unable to set attribute: " << attr_name;
  }
}