gistfile1.java

//ONE FILE
class BaseClass {
  int responseCode;
  String reason;
  
  //getters setters, what not
}

//TWO FILE
class TruckResponse extends BaseClass {
  Truck truck;
  
  class Truck {
    String make;
    String model;
  }
}

//Three File
class PersonResponse extends BaseClass {
  Person person;
  
  class person {
    String fisrtName;
    String birthday;
    String ssn;
  }
}



PersonResponse = Gson.fromGson(response);