docs: def raw_value(self):
          """
          Property to return the variable defined in ``django.conf.settings``.
  
          Returns:
              object: the variable defined in ``django.conf.settings``.
  
          Raises:
              AttributeError: if the variable is missing.
              KeyError: if the item is missing from nested setting.
          """
          if self.parent_setting is not None:
              return self.parent_setting.raw_value[self.full_name]
          else:
              return getattr(settings, self.full_name)