code: def route(self, data):
          
          if isinstance(data, (dict, list)):
              requests = data
          else:
              requests = json.loads(data)
          if not isinstance(requests, list):
              requests = [requests]
          responses = []
          for request in requests:
              responses.append(self.call(request))
          if len(responses) == 1:
              return json.dumps(responses[0])
          return json.dumps(responses)
docs: Route an Ext Direct request to the appropriate function(s) and provide the response(s)
  
          :param data: Ext Direct request
          :type data: json or dict or list
          :return: appropriate response(s)
          :rtype: json