code: public static Sequence createSequence(final org.biojava.bio.seq.Sequence sequence) {
          checkNotNull(sequence);
  
          Sequence s = new Sequence();
          if (!DNATools.getDNA().equals(sequence.getAlphabet())) {
              throw new IllegalArgumentException("alphabet must be DNA");
          }
          s.setValue(sequence.seqString());
          return s;
      }
docs: Create and return a new HML Sequence from the specified sequence.
  
  @param sequence sequence, must not be null, and alphabet must be DNA
  @return a new HML Sequence created from the specified sequence.