code: public Calendar build(final InputStream in) throws IOException, ParserException {
          return build(new InputStreamReader(in, DEFAULT_CHARSET));
      }
docs: Builds an iCalendar model from the specified input stream.
  
  @param in an input stream to read calendar data from
  @return a calendar parsed from the specified input stream
  @throws IOException     where an error occurs reading data from the specified stream
  @throws ParserException where an error occurs parsing data from the stream