@Override
    protected Mono<Void> handleSelectorIfNull(final String pluginName, final ServerWebExchange exchange, final ShenyuPluginChain chain) {
        return WebFluxResultUtils.noSelectorResult(pluginName, exchange);
    }
@Test
    public void handleSelectorIfNullTest() {
        assertNotNull(dividePlugin.handleSelectorIfNull(PluginEnum.DIVIDE.getName(), exchange, chain));
    }