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

one use

	github.com/gotd/td/tg (current package)
		tl_update_slices_gen.go#L8258: func (s UpdateChannelParticipantArray) Retain(keep func(x UpdateChannelParticipant) bool) UpdateChannelParticipantArray {