code: protected static void output(WARCReader reader, String format)
      throws IOException, java.text.ParseException {
      	if (!reader.output(format)) {
              throw new IOException("Unsupported format: " + format);
      	}
      }
docs: Write out the arcfile.
  
  @param reader
  @param format Format to use outputting.
  @throws IOException
  @throws java.text.ParseException