file with info.gFileSetAttributesAsync(object, info, flags = "G_FILE_QUERY_INFO_NONE", io.priority = 0, cancellable = NULL, callback, user.data = NULL)objectGFile.infoGFileInfo.flagsio.prioritycancellableGCancellable object, NULL to ignore.callbackuser.dataR object.gFileSetAttributesFromInfo which is
the synchronous version of this call.
When the operation is finished, callback will be called. You can then call
gFileSetAttributesFinish to get the result of the operation.