Node* n);

  Graph* graph_;
  int unique_name_counter_;
};

string CloneConstantsForBetterClusteringPassImpl::GenerateUniqueName(
    const absl::flat_hash_set<string>& name_set, absl::string_view prefix) {
  string candidate;
  do {
    candidate = absl::StrCat(prefix, "/clone_", unique_name_counter_++);
  } while (name_set.contains(candidate));
  return candidate;
}