private Charger createCharger(Attributes atts) { Id<Charger> id = Id.create(atts.getValue("id"), Charger.class); Link link = links.get(Id.createLinkId(atts.getValue("link"))); double power_kW = ReaderUtils.getDouble(atts, "power", DEFAULT_CHARGER_POWER_kW); int plugs = ReaderUtils.getInt(atts, "capacity", DEFAULT_CHARGER_CAPACITY); return new ChargerImpl(id, power_kW * EvUnitConversions.W_PER_kW, plugs, link); }