code: def init_app(self, app):
          
          if self._route is None:
              raise TypeError(
                  "route is a required argument when app is not None")
  
          app.rak = self
          app.add_url_rule(self._route, view_func=getattr(self, self._view_name), methods=['POST'])
docs: Initializes Ask app by setting configuration variables and maps RAK route to a flask view.
          The RAK instance is given the following configuration variables by calling on Flask's configuration: