builder->XlaCluster(impl()->xla_cluster_);
  }
}

string Scope::Impl::GetUniqueName(const string& prefix,
                                  bool check_single_use) const {
  if (check_single_use && single_use_scope()) {
    if (*scope_used_) {
      *status_ =
          errors::AlreadyExists(prefix, " already exists in the current scope");
      return "";
    }
    *scope_used_ = true;
    return prefix;
  }