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

one use

	github.com/gotd/td/tg (current package)
		tl_input_privacy_rule_slices_gen.go#L57: func (s InputPrivacyRuleClassArray) Retain(keep func(x InputPrivacyRuleClass) bool) InputPrivacyRuleClassArray {