public void setTlsConfig(RpcClientTlsConfig tlsConfig) {
        this.tlsConfig = tlsConfig;
    }
@Test
    void testSetTlsConfig() {
        RpcClientTlsConfig tlsConfig = new RpcClientTlsConfig();
        DefaultGrpcClientConfig.Builder builder = DefaultGrpcClientConfig.newBuilder();
        builder.setTlsConfig(tlsConfig);
        DefaultGrpcClientConfig config = (DefaultGrpcClientConfig) builder.build();
        assertEquals(tlsConfig, config.tlsConfig());
    }