Type describing city furnitures, like traffic lights, benches, ... As subclass of _CityObject, a CityFurniture inherits all attributes and relations, in particular an id, names, external references, and generalization relations. Function of a Furniture. The values of this type are defined in the XML file CityFurnitureFunctionType.xml, according to the dictionary concept of GML3. Class of a Furniture. The values of this type are defined in the XML file CityFurnitureClassType.xml, according to the dictionary concept of GML3.