public String printMessageToMaster(@NonNull String msg) {
        return hazelcastClient.requestOnMasterAndDecodeResponse(
                SeaTunnelPrintMessageCodec.encodeRequest(msg),
                SeaTunnelPrintMessageCodec::decodeResponse);
    }
@Test
    public void testSayHello() {
        String msg = "Hello world";
        SeaTunnelClient seaTunnelClient = createSeaTunnelClient();
        String s = seaTunnelClient.printMessageToMaster(msg);
        Assertions.assertEquals(msg, s);
    }