ObservableUnmarshaller(unwrap: Function<B, Buffer>, mappedType: Class<T>)ObservableUnmarshaller(unwrap: Function<B, Buffer>, mappedTypeRef: TypeReference<T>)ObservableUnmarshaller(unwrap: Function<B, Buffer>, mappedType: Class<T>, mapper: ObjectMapper)ObservableUnmarshaller(unwrap: Function<B, Buffer>, mappedTypeRef: TypeReference<T>, mapper: ObjectMapper)