docs: @Override
    public final char xmlUnescape(final String pEscaped) throws Exception {
      if ("&lt;".equals(pEscaped)) {
        return '<';
      } else if ("&gt;".equals(pEscaped)) {
        return '>';
      } else if ("&quot;".equals(pEscaped)) {
        return '"';
      } else if ("&apos;".equals(pEscaped)) {
        return '\'';
      } else if ("&amp;".equals(pEscaped)) {
        return '&';
      }
      throw new ExceptionWithCode(ExceptionWithCode.WRONG_PARAMETER,
        "There is no escape char for " + pEscaped);
    }