@Override
    public ListView<String> getServiceList(int pageNo, int pageSize, String groupName, AbstractSelector selector)
            throws NacosException {
        return grpcClientProxy.getServiceList(pageNo, pageSize, groupName, selector);
    }
@Test
    void testGetServiceList() throws NacosException {
        AbstractSelector selector = new ExpressionSelector();
        int pageNo = 1;
        int pageSize = 10;
        String groupName = "group2";
        delegate.getServiceList(pageNo, pageSize, groupName, selector);
        verify(mockGrpcClient, times(1)).getServiceList(pageNo, pageSize, groupName, selector);
        
    }