Major Description
When I continuously grant and revoke permissions for multiple users, I often can't get the desired results.
For examples, there is a Project A,
1. grant user 'A'
2. grant user 'B'
3. revoke user 'A'
4. revoke user 'B'
Now, when I revoke user 'B', there will throw an exception.
The reason for this problem is that after revoke or grant, the sequence number of the returned result is incorrect.
