title: Google Drive: The file size is null
body: <p>when I try to get the file size by getFileSize() on Google Drive the result is null. I know that the result can be null when the file in not stored on Drive but the file is stored on Drive (downloadUrl is different from null).</p>
  
  <pre><code>    Drive lService = new Builder(new NetHttpTransport(), new JacksonFactory(), lCredential).setApplicationName("TODO").build();
      FileList files = lService.files().list().execute();
  
      List&lt;FileDTO&gt; lResult = new ArrayList&lt;FileDTO&gt;();
      for (File lFile : files.getItems()) {
          DriveFileDTO lFileDTO = new DriveFileDTO();
          lFileDTO.setName(lFile.getTitle());
          lFileDTO.setMimeType(lFile.getMimeType());
          lFileDTO.setSize(lFile.getFileSize()); // &lt;-- FileSize = NULL
  
          lFileDTO.setUrl(lFile.getDownloadUrl());
  
          lResult.add(lFileDTO);
      }
  </code></pre>
  
  <p>Can you help me?</p>
  
  <p>Thanks!
  aGO!</p>