title: How can an Admin access the Google Drive contents of all the users in a particular domain?
body: <p>I am developing a tool to automate the transfer of ownership of Google Drive documents from one user to another using Admin SDK which is run by the admin. I used the Data transfer API for the ownership transfer. I wanted to validate the transfer by checking the size/number of the google drive documents before and after the transfer for which the admin account must be able to access the Google Drive contents of all the users in the domain. Is there a way to do that? Or is there a better way to validate the data transfer? </p>
  
  <p>I tried using the Drive API service for validating purposes by setting the 'key' to the target user account. All my attempts with the Drive API so far retrieved the Admin's Drive contents.</p>