code: def get_auto_config(self):
          
          methods = [m for m in dir(self) if m.startswith('auto_config_')]
          for method_name in sorted(methods):
              auto_config_method = getattr(self, method_name)
              url = auto_config_method(self.env)
              if url:
                  return url
docs: Walk over all available auto_config methods, passing them the current
          environment and seeing if they return a configuration URL