@Override
  public String validateName(String name, boolean increaseNumber) {
    if (!mySet.contains(name)) return name;
    if (increaseNumber) {
      int i = 1;
      //noinspection StatementWithEmptyBody
      for (; mySet.contains(name + i); i++) ;
      return name + i;
    }
    else {
      return "";
    }
  }
@Override
  public String validateName(String name, boolean increaseNumber)