.showinfo: (title: Str, message: Str, **kwargs: Obj) -> NoneType
.showwarning: (title: Str, message: Str, **kwargs: Obj) -> NoneType
.showerror: (title: Str, message: Str, **kwargs: Obj) -> NoneType
.askquestion: (title: Str, message: Str, **kwargs: Obj) -> Str
.askokcancel: (title: Str, message: Str, **kwargs: Obj) -> Bool
.askyesno: (title: Str, message: Str, **kwargs: Obj) -> Bool
.askretrycancel: (title: Str, message: Str, **kwargs: Obj) -> Bool