 
            public interface IMetadataStructureCacheUpdate| AddOrUpdateLoginAccount | Adds or updates a user account in the cache. | 
| AddOrUpdateUserAccount | Adds or updates a user account in the cache. | 
| AddOrUpdateUserGroupAdmin | Adds or updates a user group in the cache. | 
| RemoveLoginAccount | Removes the specified login account from the cache. | 
| RemoveUserAccount | Removes the specified user account from the cache. | 
| RemoveUserGroup | Removes the specified user group from the cache. |