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

one use

	github.com/gotd/td/tg (current package)
		tl_update_slices_gen.go#L5892: func (s UpdateChannelReadMessagesContentsArray) Retain(keep func(x UpdateChannelReadMessagesContents) bool) UpdateChannelReadMessagesContentsArray {