public static boolean isAllXMLWhitespace(final String value) {
    // Doing the count-down instead of a count-up saves a single int
    // variable declaration.
    int i = value.length();
    while (--i >= 0) {
      if (!isXMLWhitespace(value.charAt(i))) {
        return false;
      }
    }
    return true;
  }
public static boolean isAllXMLWhitespace(final String value)