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

one use

	github.com/gotd/td/tg (current package)
		tl_keyboard_button_slices_gen.go#L1167: func (s KeyboardButtonRequestPollArray) Retain(keep func(x KeyboardButtonRequestPoll) bool) KeyboardButtonRequestPollArray {