docs: def _init_metadata(self, **kwargs):
          """Initialize form metadata"""
          osid_objects.OsidRelationshipForm._init_metadata(self, **kwargs)
          update_display_text_defaults(self._mdata['text'], self._locale_map)
          self._text_default = dict(self._mdata['text']['default_string_values'][0])
          self._rating_default = self._mdata['rating']['default_id_values'][0]