title: GoogleCredentials reference not resolved with existing dependencies
body: <p>In my ongoing attempt to securely create and use Oauth 2 tokens, I'm now trying to get the token via the following code:</p>
  <pre><code>    private static String getAccessToken() throws IOException {
      GoogleCredentials googleCredentials = GoogleCredentials
              .fromStream(new FileInputStream(&quot;service-account.json&quot;))
              .createScoped(Arrays.asList(SCOPES));
      googleCredentials.refreshAccessToken();
      return googleCredentials.getAccessToken().getTokenValue();
  }
  </code></pre>
  <p>However, GoogleCredentials isn't resolved. What dependency do I need to add to my app gradle file to resolve this?</p>