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

one use

	github.com/gotd/td/tg (current package)
		tl_update_slices_gen.go#L8162: func (s UpdateChatParticipantArray) Retain(keep func(x UpdateChatParticipant) bool) UpdateChatParticipantArray {