public boolean updateMaxSize(String group, Integer maxSize) {
        return updateGroupCapacity(group, null, maxSize, null, null);
    }
@Test
    void testUpdateMaxSize() {
        
        List<Object> argList = CollectionUtils.list();
        Timestamp timestamp = new Timestamp(System.currentTimeMillis());
        when(TimeUtils.getCurrentTime()).thenReturn(timestamp);
        Integer maxSize = 3;
        argList.add(maxSize);
        
        String group = "test3";
        argList.add(group);
        when(jdbcTemplate.update(anyString(), eq(3), eq(timestamp), eq(group))).thenReturn(1);
        
        assertTrue(service.updateMaxSize(group, maxSize));
    }