public void write(WARCWritable record) throws IOException {
    if (record.getRecord() != null) {
      write(record.getRecord());
    }
  }
Appends a {@link WARCRecord} wrapped in a {@link WARCWritable} to the file.
@param record The wrapper around the record to be written.
hbase-it/src/test/java/org/apache/hadoop/hbase/test/util/warc/WARCFileWriter.java