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

one use

	github.com/gotd/td/tg (current package)
		tl_keyboard_button_slices_gen.go#L1495: func (s KeyboardButtonSimpleWebViewArray) Retain(keep func(x KeyboardButtonSimpleWebView) bool) KeyboardButtonSimpleWebViewArray {