title: Google Drive API, get total files added for the entire organization
body: <p>I got a request to pull a count of all files added to google drive for our organization.
  Basically count files for each user in their google drive.  The API has a list method that I could call a count on, but I would have to iterate through each userId and get the count.  That would take forever (120,353 records). What am I missing here as this seems possible...
  I noticed in the <a href="https://cloud.google.com/apis/design/standard_fields" rel="nofollow noreferrer">documentation</a> they mention Standard Fields and Custom methods, one standard is called <strong>total_size</strong>  (int32  The total count of items in the list irrespective of pagination.) <em>I just have not figured out in .net how to use that yet.</em></p>
  <p><a href="https://developers.google.com/drive/api/v2/reference" rel="nofollow noreferrer">https://developers.google.com/drive/api/v2/reference</a></p>