@Contract(pure = true)
  public static long parseLong(@Nullable String string, long defaultValue) {
    if (string != null) {
      try { return Long.parseLong(string); }
      catch (NumberFormatException ignored) { }
    }
    return defaultValue;
  }
@Contract(pure = true)
  public static long parseLong(@Nullable String string, long defaultValue)