@Override
    protected Mono<Void> handleSelectorIfNull(final String pluginName, final ServerWebExchange exchange, final ShenyuPluginChain chain) {
        return WebFluxResultUtils.noSelectorResult(pluginName, exchange);
    }
@Test
    public void testHandleSelectorIfNull() {
        Assertions.assertEquals(springCloudPlugin.handleSelectorIfNull("SpringCloud", exchange, chain).getClass(),
                WebFluxResultUtils.noSelectorResult("SpringCloud", exchange).getClass());
    }