code: def reference(self):
          
  
          # Import from_didl_string if it isn't present already. The import
          # happens here because it would cause cyclic import errors if the
          # import happened at load time.
          global _FROM_DIDL_STRING_FUNCTION  # pylint: disable=global-statement
          if not _FROM_DIDL_STRING_FUNCTION:
              from . import data_structures_entry
              _FROM_DIDL_STRING_FUNCTION = data_structures_entry.from_didl_string
  
          ref = _FROM_DIDL_STRING_FUNCTION(
              getattr(self, 'resource_meta_data'))[0]
          # The resMD metadata lacks a <res> tag, so we use the resources from
          # the favorite to make 'reference' playable.
          ref.resources = self.resources
          return ref
docs: The Didl object this favorite refers to.