Code review comment for lp:~jameinel/bzr/1.17-chk-multilevel

Shallow immediate review:

The docstring for the class, and perhaps the class name could be better.

In terms of sets its:
interesting - uninteresting

So perhaps
CHKMapDifference

as a class name. And for the docstring, something like

"""Iterate the stored pages and key,value pairs for (new - old).

This class provides a generator over the stored CHK pages and the
key,value pairs that are in any of the new maps and not in any of the
old maps.
"""

-Rob