code: public OrderDirection BY(String attributeName) {
  		OrderBy ob = this.orderExpression.getCreateOrderCriteriaFor(attributeName);
  		OrderDirection ret = new OrderDirection(ob);
  		QueryRecorder.recordInvocation(this, "BY", ret, QueryRecorder.literal(attributeName));
  		return ret;
  	}
docs: Specify the attribute to be used for sorting
  @param attributeName
  @return