Given the FlyingCar and FlyingCarGsonDeserializer classes, write the missing method call with both arguments needed to register the custom deserializer.
Gson gson = new GsonBuilder()
// register custom deserializer for FlyingCar class here
.create();
String jsonInput = ...; // initialized with serialized form of FlyingCar
FlyingCar flyingCar = gson.fromJson(jsonInput, FlyingCar.class);