@Override
    public Mono<Void> apply(final ServerWebExchange exchange, final ShenyuPluginChain shenyuPluginChain, final ParamMappingRuleHandle paramMappingRuleHandle) {
        return shenyuPluginChain.execute(exchange);
    }
@Test
    public void testApply() {
        when(this.chain.execute(any())).thenReturn(Mono.empty());
        StepVerifier.create(defaultOperator.apply(this.exchange, this.chain, new ParamMappingRuleHandle())).expectSubscription().verifyComplete();
    }