[sakai2-tcc] Cleanup of StorageUser

[David Horwitz]

Sounds a sensible change

On 03/09/2012 12:38 PM, Matthew Buckett wrote:
> I'm proposing to split StorageUser into two interfaces which match the
> methods needed by the users of these interfaces in
> sakai-kernel-storage-util.
>
> At the moment lots of code classes have methods that return null
> because they have to implement the whole of the StorageUser interface
> even though more than half of the methods aren't ever called.
>
> Making this change cleans up lots of redundant methods in the code
> kernel classes.
>
> https://jira.sakaiproject.org/browse/KNL-899
>