code: public final String getSequenceCodec() {
      String seqCodec = null;
      if ("BIO".equals(this.sequenceCodec)) {
        seqCodec = BioCodec.class.getName();
      } else if ("BILOU".equals(this.sequenceCodec)) {
        seqCodec = BilouCodec.class.getName();
      }
      return seqCodec;
    }
docs: Get the Sequence codec.
  
  @return the sequence codec