code: public static Comparator<CmsAliasTableRow> getComparator() {
  
          return new Comparator<CmsAliasTableRow>() {
  
              public int compare(CmsAliasTableRow o1, CmsAliasTableRow o2) {
  
                  String err1 = getValueInternal(o1);
                  String err2 = getValueInternal(o2);
                  if ((err1 == null) && (err2 == null)) {
                      return 0;
                  }
                  if (err1 == null) {
                      return -1;
                  }
                  if (err2 == null) {
                      return 1;
                  }
                  return 0;
              }
          };
      }
docs: Gets the comparator which should be used for this column.<p>
  
  @return the comparator used for this column