'Return a django QuerySet for all of the courses with this user x role. You can access
any of these properties on each result record:
* user (will be self.user--thus uninteresting)
* org
* course_id
* role (will be self.role--thus uninteresting)'

def courses_with_role(self):

    return CourseAccessRole.objects.filter(role=self.role, user=self.user)
