Comment 2 for bug 1390167

The case your talking about is in the __init__ and update of BatchAction, these function are never passed any items so has no way to get the plural version of the verbose name other than to fake it by passing some fake data into the items parameter of that function. However when it has that data e.g. in the handle function it is passed real information:

self._get_action_name(action_not_allowed).lower()
self._get_action_name(action_failure).lower()
self._get_action_name(action_success, past=True)