attr(LENGTH_NAME).map(ch -> ch.length()), elem(MIN_NAME, alleleWriter.map(ch -> ch.getMin())), elem(MAX_NAME, alleleWriter.map(ch -> ch.getMax())),
attr(LENGTH_NAME).map(ch -> ch.length()), elem(MIN_NAME, alleleWriter.map(ch -> ch.getMin())), elem(MAX_NAME, alleleWriter.map(ch -> ch.getMax())),