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

one use

	github.com/gotd/td/tg (current package)
		tl_update_slices_gen.go#L2652: func (s UpdateChatParticipantAddArray) Retain(keep func(x UpdateChatParticipantAdd) bool) UpdateChatParticipantAddArray {