drive to see if media has been inserted or removed.gDrivePollForMedia(object, cancellable = NULL, callback, user.data = NULL)objectGDrive.cancellableGCancellable object, NULL to ignore.callbackGAsyncReadyCallback, or NULL.user.datacallbackcallback will be called.
You can then call gDrivePollForMediaFinish to obtain the
result of the operation.