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

one use

	github.com/gotd/td/tg (current package)
		tl_server_gen.go#L6739: func (s *ServerDispatcher) OnHelpGetPremiumPromo(f func(ctx context.Context) (*HelpPremiumPromo, error)) {