SEL finishedSelector = @selector(viewController:finishedWithAuth:error:);
GTMOAuth2ViewControllerTouch *authViewController =
[[GTMOAuth2ViewControllerTouch alloc] initWithScope:kGTLRAuthScopeDrive
clientID:kClientId
clientSecret:kClientSecret
keychainItemName:kKeychainItemName
delegate:self
finishedSelector:finishedSelector];
GTLRQuery *query = [GTLRDriveQuery_FilesGet queryForMediaWithFileId:myfile.identifier];
NSURLRequest *downloadRequest = [self.driveService requestForQuery:query];
GTMSessionFetcher *fetcher = [self.driveService.fetcherService fetcherWithRequest:downloadRequest];
[fetcher setCommentWithFormat:@"Downloading %@", myfile.name];
[fetcher beginFetchWithCompletionHandler:^(NSData *data, NSError *error) {
if (error == nil) {
}
}];