a GObject.GType supporting Gio.AsyncInitable.
the number of parameters in parameters
the parameters to use to construct the object
the I/O priority of the operation
Optionalcancellable: Gio.Cancellableoptional Gio.Cancellable object, null to ignore.
Optionalcallback: AsyncReadyCallback<Gio.AsyncInitable<GObject.Object>>a Gio.AsyncReadyCallback to call when the initialization is finished
Helper function for constructing Gio.AsyncInitable object. This is similar to
g_object_newv()but also initializes the object asynchronously.When the initialization is finished,
callbackwill be called. You can then callg_async_initable_new_finish()to get the new object and check for any errors.