const string sep =
      name_.empty() || unique_name.empty() ? "" : kScopeSeparator;
  return strings::StrCat(name_, sep, unique_name);
}

string Scope::GetUniqueNameForOp(const string& default_name) const {
  if (impl()->single_use_scope()) {
    if (impl()->op_name_.empty() || *impl()->scope_used_) {
      *impl()->status_ =

  // The following functions are for scope object consumers.

  /// Return a unique name, using default_name if an op name has not been
  /// specified.
  string GetUniqueNameForOp(const string& default_name) const;

  /// Update the status on this scope.
  /// Note: The status object is shared between all children of this scope.