public CrossFilterConfig getCross() {
        return cross;
    }
@Test
    public void testCrossFilterConfig() {
        ShenyuConfig.CrossFilterConfig cross = config.getCross();
        cross.setAllowCredentials(false);
        cross.setEnabled(false);
        cross.setAllowedExpose("test");
        cross.setAllowedMethods("test");
        cross.setAllowedHeaders("test");
        cross.setMaxAge("test");

        String allowedExpose = cross.getAllowedExpose();
        String allowedHeaders = cross.getAllowedHeaders();
        ShenyuConfig.CrossFilterConfig.AllowedOriginConfig allowedOrigin = cross.getAllowedOrigin();
        Boolean enabled = cross.getEnabled();
        String maxAge = cross.getMaxAge();
        String allowedMethods = cross.getAllowedMethods();

        notEmptyElements(allowedExpose, allowedHeaders, allowedOrigin, enabled, maxAge, allowedMethods);
    }