code: @Override
      public final Object parseObject(String source,
                                      ParsePosition parsePosition) {
          return parse(source, parsePosition);
      }
docs: Parses text from a string to produce a number.
  @param source the String to parse
  @param parsePosition the position at which to start the parse
  @return the parsed number, or null
  @see java.text.NumberFormat#parseObject(String, ParsePosition)