code: def _init_metadata(self):
          
          self._shuffle_metadata = {
              'element_id': Id(self.my_osid_object_form._authority,
                               self.my_osid_object_form._namespace,
                               'shuffle'),
              'element_label': 'Shuffle',
              'instructions': 'Shuffle parameters',
              'required': True,
              'read_only': False,
              'linked': True,
              'array': False,
              'default_boolean_values': [True],
              'syntax': 'BOOLEAN',
          }
docs: stub