Dialogflow-节点SDK不在会话中保留上下文

我正在使用dialogflow节点SDK向dialogflow发送textRequests和eventRequests。 fulfillment webhook显示,尽管sessionId相同,但上下文没有被保留。 使用来自google assistant上操作的同一dialogflow代理时,上下文将被保留。 所以唯一的区别是我使用Node SDK发送文本。

this.app = apiai(CLIENT_ACCESS_TOKEN);
this.options = {
      sessionId: 'abc',
      originalRequest: {
        data: {
          user: 'temp_user'
        },
        conversation: {
          "conversationId": "123456789"
        }
      }
    };

const request = this.app.textRequest('This is captured by INTENT_1 that triggers 
    a webhook that sets context to MY_CONTEXT', options);

const request = this.app.textRequest('This should be captured by INTENT_2 
    that has an input context of MY_CONTEXT', options);

第二个请求不会触发INTENT\u 2,而是默认的回退意图,除非我在dialogflow中从INTENT\u 2中删除输入上下文,然后触发它