gen.json

{
    "Transport" : 
        {   "abstract":true,
            "fields": { "generatedBool":{ "t":"boolean", "gs":true},  "engine":{ "t":"Engine"},  "someMap":{ "t":"Map<String,Integer>"}  } ,
            "methods":{ "someGeneratedTestMethod":{ "return":"Long", "param":"ArrayList<Integer> ints, boolean isTrue"} ,
                        "someAbstractTestMethod": { "abstract":true, "return":"Long", "param":"ArrayList<Integer> ints, boolean isTrue"} 
            } 
        },
    "Railbound" : {":":"Transport" , "fields": { "someInt":{ "t":"Integer"}   } },
    "OffTrack" : {":":"Transport"},
    "Tram" : {"extends":"Railbound", "implements":"Gridbound"},
    "RailWay" : {":":"Railbound"},
    "Underground" : {":":"Railbound", "implements":"Gridbound"},
    "Bus" : {":":"Transport"},
    "IntercityBus" : {":":"Transport"},
    "Gridbound" : {"interface":true},
    "Engine" : 
        {   "interface":true, 
            "methods":{ "range" :{ "return":"int"} }
        },
    "CombustionEngine" : {"implements":"Engine"} ,
    "Electrified" : {"::":"Engine"} 
}