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

one use

	github.com/gotd/td/tg (current package)
		tl_chat_participant_slices_gen.go#L57: func (s ChatParticipantClassArray) Retain(keep func(x ChatParticipantClass) bool) ChatParticipantClassArray {