docs: public void addColumnIsNull(String column)
      {
  		// PAW
  		//SelectionCriteria c = ValueCriteria.buildNullCriteria(column, getAlias());
  		SelectionCriteria c = ValueCriteria.buildNullCriteria(column, getUserAlias(column));
          c.setTranslateAttribute(false);
          addSelectionCriteria(c);
      }