anchor.diff:  // Here's how to generate refreshToken:
   // https://docs.google.com/a/google.com/document/d/1OEM4GGhMrOWS4pYvtIWtkw_17C2pAlWPxUFu-7_YF-4
   final String clientID = Platform.environment['SPARK_UPLOADER_CLIENTID'];
  -final String clientSecret = Platform.environment['SPARK_UPLOADER_CLIENTSECRET'];
  -final String refreshToken = Platform.environment['SPARK_UPLOADER_REFRESHTOKEN'];
  +final String clientSecret =
  +    Platform.environment['SPARK_UPLOADER_CLIENTSECRET'];
  +final String refreshToken =
  +    Platform.environment['SPARK_UPLOADER_REFRESHTOKEN'];
   final String appID = Platform.environment['SPARK_APP_ID'];
   
   void main([List<String> args]) {
  
positive.code:           String str = new String.fromCharCodes(data);
            result += str;
          }, onError: (e) {
            completer.completeError('error from stream when expected close');
          }, onDone: () {
            completer.complete(result);
          });
  
negative.code:           String str = new String.fromCharCodes(data);
            result += str;
          }, onError: (e) {
            completer.completeError('Connection to server closed unexpectedly');
          }, onDone: () {
            Map<String, String> response = JSON.decode(result) as Map<String, String>;
            String token = response['access_token'];
  