Serialize content and write it to the given output stream, asynchronously.
The default I/O priority is G_PRIORITY_DEFAULT (i.e. 0), and lower numbers indicate a higher priority.
When the operation is finished, callback will be called. You must then call funcGdk.content_serialize_finish to get the result of the operation.
a gio.output_stream.OutputStream to write the serialized content to
the mime type to serialize to
the content to serialize
the I/O priority of the operation
optional gio.cancellable.Cancellable object
callback to call when the operation is done
Serialize content and write it to the given output stream, asynchronously.
The default I/O priority is G_PRIORITY_DEFAULT (i.e. 0), and lower numbers indicate a higher priority.
When the operation is finished, callback will be called. You must then call funcGdk.content_serialize_finish to get the result of the operation.