docs: def _init_metadata(self):
          """stub"""
          self._max_strings_metadata = {
              'element_id': Id(self.my_osid_object_form._authority,
                               self.my_osid_object_form._namespace,
                               'maxStrings'),
              'element_label': 'maxStrings',
              'instructions': 'QTI maxStrings settings',
              'required': False,
              'read_only': False,
              'linked': False,
              'array': False,
              'default_integer_values': [100],
              'syntax': 'INTEGER',
              'object_set': [],
              'minimum_integer': None,
              'maximum_integer': None,
              'integer_set': []
          }
          self._expected_length_metadata = {
              'element_id': Id(self.my_osid_object_form._authority,
                               self.my_osid_object_form._namespace,
                               'expectedLength'),
              'element_label': 'expectedLength',
              'instructions': 'QTI expectedLength setting',
              'required': False,
              'read_only': False,
              'linked': False,
              'array': False,
              'default_integer_values': [200],
              'syntax': 'INTEGER',
              'object_set': [],
              'minimum_integer': None,
              'maximum_integer': None,
              'integer_set': []
          }
          self._expected_lines_metadata = {
              'element_id': Id(self.my_osid_object_form._authority,
                               self.my_osid_object_form._namespace,
                               'expectedLines'),
              'element_label': 'expectedLines',
              'instructions': 'QTI expectedLines setting',
              'required': False,
              'read_only': False,
              'linked': False,
              'array': False,
              'default_integer_values': [10],
              'syntax': 'INTEGER',
              'object_set': [],
              'minimum_integer': None,
              'maximum_integer': None,
              'integer_set': []
          }
          super(QTIExtendedTextAnswerQuestionFormRecord, self)._init_metadata()