code: <T extends ListValue> void setListRelation(String attributeName,
              String value, Class<T> valuesClass) {
          instance.setListRelation(this, attributeName, value, valuesClass);
      }
docs: Sets a List relation by name.
  
  @param attributeName The name of the Relation Attribute.
  @param value The name of the List value to be set in the relation.
  @param valuesClass Class type of T.