title: What is the easiest way to save file from Google Dataflow to Google Storage?
body: <p>I've got my pipeline up and running, but I need to save a number to a file, which will allow me to come back to previous processing in case something goes wrong ( or when I want to deploy new version of pipeline, and I cannot use the update-pipeline feature ).</p>
  
  <p>I was trying to add libraries from google-cloud-storage, but there are errors in Runtime (it does not find some classes from google-cloud-core even when I have all dependencies up to date ). There need to be a simple way, just to save ( and then read ) a file. I will be grateful for some snippet or link. </p>