@Override
 public boolean equals(Object sourceObj) {
   Object obj = deproxy(sourceObj);
   if (this == obj) return true;
   if (obj == null) return false;
   if (getClass() != obj.getClass()) return false;
   CatalogCategoryMasterProductSkuRel other = (CatalogCategoryMasterProductSkuRel) obj;
   if (pk == null) {
     if (other.pk != null) return false;
   } else if (!pk.equals(other.pk)) return false;
   if (ranking == null) {
     if (other.ranking != null) return false;
   } else if (!ranking.equals(other.ranking)) return false;
   return true;
 }