public int compare(Object obj1, Object obj2) {
   SuitableForSurgeryCommentVo voObj1 = (SuitableForSurgeryCommentVo) obj1;
   SuitableForSurgeryCommentVo voObj2 = (SuitableForSurgeryCommentVo) obj2;
   return direction * (voObj1.compareTo(voObj2, this.caseInsensitive));
 }