Also consider member typedefs for determining the base class
Summary:
This should allow us to avoid having to include (or copy) this into
KCalCore and KMime, as we no longer need to specialize the SuperClass
template.
PS: The unit test was written by Till 13 years ago, I have no idea who
Gerd and Rudi are, or why they are sub-classes of me.
Reviewers: dvratil
Reviewed By: dvratil
Subscribers: dvratil, kde-pim
Tags: KDE PIM
Differential Revision: https://phabricator.kde.org/D20845