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

one use

	github.com/gotd/td/tg (current package)
		tl_update_slices_gen.go#L7916: func (s UpdateGroupCallParticipantsArray) Retain(keep func(x UpdateGroupCallParticipants) bool) UpdateGroupCallParticipantsArray {