code: def get_config(self, key, default=None):
          
          depr(0, 13, "Route.get_config() is deprectated.",
                      "The Route.config property already includes values from the"
                      " application config for missing keys. Access it directly.")
          return self.config.get(key, default)
docs: Lookup a config field and return its value, first checking the
              route.config, then route.app.config.