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

one use

	github.com/gotd/td/tg (current package)
		tl_account_saved_ringtone_slices_gen.go#L152: func (s AccountSavedRingtoneConvertedArray) Retain(keep func(x AccountSavedRingtoneConverted) bool) AccountSavedRingtoneConvertedArray {