gFileFindEnclosingMountAsync(object, io.priority = 0, cancellable = NULL, callback, user.data = NULL)objectGFileio.prioritycancellableGCancellable object, NULL to ignore.callbackGAsyncReadyCallback to call when the request is satisfieduser.datagFileFindEnclosingMount which is
the synchronous version of this call.
When the operation is finished, callback will be called. You can then call
gFileFindEnclosingMountFinish to get the result of the operation.