docs: def _init_metadata(self):
          """stub"""
          self._attempts_metadata = {
              'element_id': Id(self.my_osid_object_form._authority,
                               self.my_osid_object_form._namespace,
                               'attempts'),
              'element_label': 'Attempts',
              'instructions': 'Max number of student attempts',
              'required': False,
              'read_only': False,
              'linked': False,
              'array': False,
              'default_object_values': [0],
              'syntax': 'INTEGER',
              'object_set': [],
              'minimum_integer': None,
              'maximum_integer': None,
              'integer_set': []
          }
          self._weight_metadata = {
              'element_id': Id(self.my_osid_object_form._authority,
                               self.my_osid_object_form._namespace,
                               'weight'),
              'element_label': 'Weight',
              'instructions': 'Weight of the item when calculating grades',
              'required': False,
              'read_only': False,
              'linked': False,
              'array': False,
              'default_object_values': [1.0],
              'syntax': 'DECIMAL',
              'object_set': [],
              'decimal_scale': None,
              'minimum_decimal': None,
              'maximum_decimal': None,
              'decimal_set': []
          }
          # self._rerandomize_metadata = {
          #     'element_id': Id(self.my_osid_object_form._authority,
          #                      self.my_osid_object_form._namespace,
          #                      'rerandomize'),
          #     'element_label': 'Randomize',
          #     'instructions': 'How to rerandomize the parameters',
          #     'required': False,
          #     'read_only': False,
          #     'linked': False,
          #     'array': False,
          #     'default_object_values': ['never'],
          #     'syntax': 'STRING',
          #     'minimum_string_length': None,
          #     'maximum_string_length': None,
          #     'string_set': []
          # }
          self._showanswer_metadata = {
              'element_id': Id(self.my_osid_object_form._authority,
                               self.my_osid_object_form._namespace,
                               'showanswer'),
              'element_label': 'Show answer',
              'instructions': 'When to show the answer to the student',
              'required': False,
              'read_only': False,
              'linked': False,
              'array': False,
              'default_object_values': ['closed'],
              'syntax': 'STRING',
              'minimum_string_length': None,
              'maximum_string_length': None,
              'string_set': []
          }
          self._markdown_metadata = {
              'element_id': Id(self.my_osid_object_form._authority,
                               self.my_osid_object_form._namespace,
                               'markdown'),
              'element_label': 'Studio markdown',
              'instructions': 'Studio markdown representation of the problem',
              'required': False,
              'read_only': False,
              'linked': False,
              'array': False,
              'default_object_values': [''],
              'syntax': 'STRING',
              'minimum_string_length': None,
              'maximum_string_length': None,
              'string_set': []
          }