code: def options(self):
          
          #configure engine with an empty dict to ensure default selection/options
          self.engine.configure({})
          conf = self.engine.as_dict()
          conf["returns"] = [oname for oname in six.iterkeys(self._outputs)]
          # Note: we overide args to only list the ones that are declared in this view
          conf["args"] = [iname for iname in six.iterkeys(self._inputs)]
          return jsonify(conf)
docs: Engine options discover HTTP entry point