code: public final SequenceLabel createSequence(final String seqString,
        final String seqType, final int offset, final int length) {
      final SequenceLabel sequence = new SequenceLabel();
      sequence.setValue(seqString);
      sequence.setType(seqType);
      sequence.setStartOffset(offset);
      sequence.setSequenceLength(length);
      return sequence;
    }
docs: Constructs a {@link SequenceLabel} as a String with corresponding offsets
  and length from which to calculate start and end position of the Name.
  
  @param seqString
  string to be added to a Sequence object
  @param seqType
  the type of the Sequence
  @param offset
  the starting offset of the Sequence
  @param length
  of the string
  @return a new Sequence object