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

one use

	github.com/gotd/td/tg (current package)
		tl_messages_sponsored_messages_slices_gen.go#L57: func (s MessagesSponsoredMessagesClassArray) Retain(keep func(x MessagesSponsoredMessagesClass) bool) MessagesSponsoredMessagesClassArray {