def get_view_name(self):
raise NotImplementedError<EOL>
Returns a string representing the view name as set in the ``urls.py``.

You must implement this when inheriting this mixin. If your ``urls.py``
looks like this::

    ...
    url(r'^$', HomeView.as_view(), name='home_view'

Then you should simply return::

    return 'home_view'