docs: def _init_map(self):
          """stub"""
          self.my_osid_object_form._my_map['learningObjectiveId'] = \
              str(self._learning_objective_id_metadata['default_id_values'][0])
          self.my_osid_object_form._my_map['minimumProficiency'] = \
              str(self._minimum_proficiency_metadata['default_id_values'][0])