@Override
    public boolean shouldHandle(String key) {
        return super.shouldHandle(key) && RouterConstant.ROUTER_KEY_PREFIX.equals(key);
    }
@Test
    public void testShouldHandle() {
        Assert.assertTrue(handler.shouldHandle("servicecomb.routeRule"));
        Assert.assertFalse(handler.shouldHandle("servicecomb.routeRule.foo"));
    }