github.com/gotd/td/tg.InputKeyboardButtonURLAuthArray.Retain (method)

one use

	github.com/gotd/td/tg (current package)
		tl_keyboard_button_slices_gen.go#L1085: func (s InputKeyboardButtonURLAuthArray) Retain(keep func(x InputKeyboardButtonURLAuth) bool) InputKeyboardButtonURLAuthArray {