docs: def set_meta(self, _props):
          """Set metadata values for collection."""
          if self.is_fake:
              return
  
          props = {}
          for key, value in _props.items():
              key, value = self.meta_mappings.map_set(key, value)
              props[key] = value
  
          # Pop out tag which we don't want
          props.pop("tag", None)
  
          self.journal.update_info({})
          self.journal.update_info(props)
          self.journal.save()