public static Client connect(String url, ChannelHandler... handler) throws RemotingException {
        return connect(URL.valueOf(url), handler);
    }
@Test
    void testConnect() throws RemotingException {
        Assertions.assertThrows(RuntimeException.class, () -> Transporters.connect((String) null));
        Assertions.assertThrows(RuntimeException.class, () -> Transporters.connect((URL) null));
        Assertions.assertNotNull(Transporters.connect(url));
        Assertions.assertNotNull(Transporters.connect(url, channel));
        Assertions.assertNotNull(Transporters.connect(url, channel, channel));
    }