code: protected static void outputRecord(final ArchiveReader r,
          final String format)
      throws IOException {
          if (!r.outputRecord(format)) {
              throw new IOException("Unsupported format" +
                  " (or unsupported on a single record): " + format);
          }
      }
docs: Output passed record using passed format specifier.
  @param r ARCReader instance to output.
  @param format What format to use outputting.
  @throws IOException