code: @Deprecated
    public StreamVariantsRequest getStreamVariantsRequest(String variantSetId) {
      return StreamVariantsRequest.newBuilder()
          .setVariantSetId(variantSetId)
          .setReferenceName(referenceName)
          .setStart(start)
          .setEnd(end)
          .build();
    }
docs: Construct a StreamVariantsRequest for the Contig.
  @param variantSetId
  @return the request object