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

one use

	github.com/gotd/td/tg (current package)
		tl_updates_channel_difference_slices_gen.go#L397: func (s UpdatesChannelDifferenceArray) Retain(keep func(x UpdatesChannelDifference) bool) UpdatesChannelDifferenceArray {