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

one use

	github.com/gotd/td/tg (current package)
		tl_keyboard_button_slices_gen.go#L1577: func (s KeyboardButtonRequestPeerArray) Retain(keep func(x KeyboardButtonRequestPeer) bool) KeyboardButtonRequestPeerArray {