code: function(eventEmitter, path) {
  
    ImageService.post(
        path, 
        function(err,ret) {
          if (err) {
            eventEmitter.emit('error', err);
          } else {
            eventEmitter.emit('success', ret);
          }
        });
  
    eventEmitter.emit('start');
  
    return eventEmitter;
  
  }
docs: **********************************************************************
  Here we show an example of uploading an image
  and providing an EventEmitter interface to the process.
  *********************************************************************