title: Ai Platform Prediction storage bucket trigger
body: <p>My when the user selects an image on my ios app, i want that image to upload to a storage bucket, run my tf model on that image-outputtng another image, then save this output image to the cloud bucket aswell.</p>
  <p>Shall I use cloud function with a trigger on uploading to the storage bucket, then call my ai platform prediction model from the cloud function, then use the cloud function to save the output image?</p>
  <p>Or is there a way I can skip the cloud function and only use ai platform prediction with custom prediction routine. Then in postprocessing upload output image to my storage bucket. I'm not sure that I can trigger the ai platform prediction from uploading to a storage bucket though...</p>