'The advertised_start is text a course author can provide to be displayed
instead of their course\'s start date. For example, if a course run were
to start on December 1, 2016, the author might provide \'Winter 2016\' as
the advertised start.'

def _attach_course_run_advertised_start(self, run_mode):

    run_mode['advertised_start'] = self.course_overview.advertised_start
