code: def add_websocket_route(
          self, handler, uri, host=None, version=None, name=None
      ):
          
          self.websocket(uri=uri, host=host, version=version, name=name)(handler)
          return handler
docs: Create a blueprint websocket route from a function.
  
          :param handler: function for handling uri requests. Accepts function,
                          or class instance with a view_class method.
          :param uri: endpoint at which the route will be accessible.
          :param host: IP Address of FQDN for the sanic server to use.
          :param version: Blueprint Version
          :param name: Unique name to identify the Websocket Route
          :return: function or class instance