code: def _from_deprecated_son(cls, id_dict, run):
          
          course_key = CourseLocator(
              id_dict['org'],
              id_dict['course'],
              run,
              id_dict['revision'],
              deprecated=True,
          )
          return cls(course_key, id_dict['category'], id_dict['name'], deprecated=True)
docs: Return the Location decoding this id_dict and run