content: # pylint: disable=too-few-public-methods
  from .exceptions import ObsoleteAttributeException
  
  
  class ObsoleteAttribute:
      def __init__(self, message: str, exc=ObsoleteAttributeException):
          self.message = message
          self.exc = exc
  
  
  class ObsoleteChecker:
      _obsolete_attributes = {
          "run_server": ObsoleteAttribute("app.run_server has been replaced by app.run"),
          "long_callback": ObsoleteAttribute(
              "app.long_callback has been  removed, use app.callback(..., background=True) instead"
          ),
      }
  
      def __getattr__(self, name: str):
          if name in self._obsolete_attributes:
              err = self._obsolete_attributes[name]
              raise err.exc(err.message)
          return getattr(self.__dict__, name)
  