@Contract(value = "null -> true",pure = true)
  // we need to keep this method to preserve backward compatibility
  public static boolean isEmptyOrSpaces(@Nullable String s) {
    return isEmptyOrSpaces((CharSequence)s);
  }
@Contract(value = "null -> true",pure = true)
  // we need to keep this method to preserve backward compatibility
  public static boolean isEmptyOrSpaces(@Nullable String s)