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

one use

	github.com/gotd/td/tg (current package)
		tl_input_privacy_key_slices_gen.go#L57: func (s InputPrivacyKeyClassArray) Retain(keep func(x InputPrivacyKeyClass) bool) InputPrivacyKeyClassArray {