github.com/gotd/td/tg.ServerDispatcher.OnLangpackGetLanguages (method)

one use

	github.com/gotd/td/tg (current package)
		tl_server_gen.go#L9234: func (s *ServerDispatcher) OnLangpackGetLanguages(f func(ctx context.Context, langpack string) ([]LangPackLanguage, error)) {