Notice the syntax for creating an instance of HttpRequest.
注意创建HttpRequest的实例的语法。
Finally, after constructing the HttpRequest, you invoke its enqueue method.
最后,在构建好HttpRequest之后,调用其enqueue方法。
Place a HTTPRequest node that will invoke the sample backend RESTful service.
放置一个将调用样例后台 REST 式服务的 HTTPRequest 节点。
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