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

one use

	github.com/gotd/td/tg (current package)
		tl_update_slices_gen.go#L7752: func (s UpdatePinnedChannelMessagesArray) Retain(keep func(x UpdatePinnedChannelMessages) bool) UpdatePinnedChannelMessagesArray {