HTTPAPIDataAction Class
HTTPAPIDataAction is a subclass or the
            AbstractHTTPDataAction base class. You can extend this concrete class
        to provide the functionality you require.
               
HTTPAPIDataAction
Use the HTTPAPIDataAction class to invoke HTTP APIs by
                creating an asyncronous XMLHTTPRequest (XHR) and submitting it to
                the specified URL. The HTTP response code enables a message to be displayed briefly
                on the canvas. For example, you can customize the request to send JSON or XML
                payloads to a REST or SOAP server and you can customize the response handler to show
                a custom user interface.
                  
For the HTTPAPIDataAction data action to work, you must
                add the URL of the HTTP API you want to access to your list of Safe Domains and
                grant it Connect access. See Register
                    Safe Domains.
                  
+ HTTPAPIDataAction(oKOModel)
                     + create(sID_sName) : HTTPAPIDataAction
+ upgrade(oOldDataActionJS) : Object
                     + invoke(oActionContext: ActionContext, oDataActionContext:DataActionContext)
+ getGadgetInfos(oReport) : AbstractGadgetInfo[]
                     # createHTTPMethodGadgetInfo(oReport) : AbstractGadgetInfo
# createPostParamGadgetInfo(oReport) : AbstractGadgetInfo