'Method called when the user click on the ``Skip`` button.
``cancel`` should be overloaded instead of ``action_skip``. As with
``execute``, if it returns an action dictionary that action is
executed in stead of the default (going to the next configuration item)
The default implementation is a NOOP.
``cancel`` is also called by the default implementation of
``action_cancel``.'

@api.multi
def cancel(self):

    pass
