@Override
    public Object run() throws ZuulException {
        // Exit the entries in order.
        // The entries can be retrieved from the request context.
        SentinelEntryUtils.tryExitFromCurrentContext();
        return null;
    }
@Test
    public void testRun() throws Exception {
        SentinelZuulPostFilter sentinelZuulPostFilter = new SentinelZuulPostFilter();
        Object result = sentinelZuulPostFilter.run();
        Assert.assertNull(result);
    }