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

one use

	github.com/gotd/td/tg (current package)
		tl_help_terms_of_service_update_slices_gen.go#L302: func (s HelpTermsOfServiceUpdateArray) Retain(keep func(x HelpTermsOfServiceUpdate) bool) HelpTermsOfServiceUpdateArray {