@GetMapping(value = "/simple/nodes")
    @Secured(resource = Commons.NACOS_CORE_CONTEXT + "/cluster", action = ActionTypes.READ, signType = SignType.CONSOLE)
    public RestResult<Collection<String>> listSimpleNodes() {
        return RestResultUtils.success(memberManager.getMemberAddressInfos());
    }
@Test
    void testListSimpleNodes() {
        Mockito.when(serverMemberManager.getMemberAddressInfos()).thenReturn(Collections.singleton("1.1.1.1"));
        
        RestResult<Collection<String>> result = nacosClusterController.listSimpleNodes();
        assertEquals(1, result.getData().size());
    }