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