a GType supporting GAsyncInitable.
the parameters to use to construct the object
the I/O priority of the operation.
optional GCancellable object, NULL to ignore.
a GAsyncReadyCallback to call when the initialization is finished
the data to pass to callback function
Helper function for constructing GAsyncInitiable object. This is similar to g_object_newv() but also initializes the object asynchronously. When the initialization is finished, callback will be called. You can then call g_async_initable_new_finish() to get the new object and check for any errors. Since 2.22