有以下代碼：用戶模型.gotype UserModel struct{login, password}var EntityArr = map[string]UserModel{}func GetAll() map[string]UserModel {    uuidString := uuid.New().String()    user := Entity{Login: "myLogin", Password: "MyPassword"}    EntityArr[uuidString] = user    return EntityArr}PostModel.gotype PostModel struct{title, description}func GetAll() map[string]PostModel {/* like in UserModel */}用戶控制器.gotype ControllerUser struct{}func GetAll()map[string]UserModel { rertun UserModel.GetAll() } PostController.gotype ControllerPost struct{}func GetAll()map[string]PostModel { rertun PostModel.GetAll() }我嘗試動態(tài)檢測必要的控制器：main.govar currentController = Intfcswitch entity {  "user" : currentController = UserController.ControllerUser{}  "post" : currentController = PostController.ControllerPost{}}currentController.GetAll()為此，我需要一個通用接口接口.gotype Intfc interface {    ShowAll() ???}函數(shù)（在接口中）返回什么類型的返回數(shù)據(jù)？