foundation/org.eclipse.persistence.core/src/test/resources/org/eclipse/persistence/testing/oxm/inheritance/car.json

{"vehicle":{
     "type":"car-type",
     "model":"Grand Am",
     "manufacturer":"Pontiac",
     "top-speed":220,
     "number-of-doors":2,
     "miles-per-gallon":30
   }
}