docs: def _get_setting(self, setting_dotted_name, default=None):
          """Return the value of a potentially nested dict setting.
  
          E.g., 'DATABASES.default.NAME
  
          """
          name_list = setting_dotted_name.split('.')
          setting_obj = getattr(django.conf.settings, name_list[0], default)
          # if len(name_list) == 1:
          #   return setting_obj
  
          return functools.reduce(
              lambda o, a: o.get(a, default), [setting_obj] + name_list[1:]
          )