package configurer import ( "net" ) type noopListener struct{} func (n *noopListener) Accept() (net.Conn, error) { return nil, net.ErrClosed } func (n *noopListener) Close() error { return nil } func (n *noopListener) Addr() net.Addr { return nil } func openUAPI(deviceName string) (net.Listener, error) { return &noopListener{}, nil }