FileOutputStream.queryInfoAsync

void queryInfoAsync(string attributes,  int  ioPriority,  gio.cancellable.Cancellable cancellable =  null,  gio.types.AsyncReadyCallback callback =  null)

Asynchronously queries the stream for a #GFileInfo. When completed, callback will be called with a #GAsyncResult which can be used to finish the operation with [gio.file_output_stream.FileOutputStream.queryInfoFinish].

For the synchronous version of this function, see [gio.file_output_stream.FileOutputStream.queryInfo].

Parameters

`attributes`	a file attribute query string.
`ioPriority`	the I/O priority of the request
`cancellable`	optional #GCancellable object, null to ignore.
`callback`	callback to call when the request is satisfied