a GType supporting GInitable.
the parameters to use to construct the object. [array length=n_parameters]
optional GCancellable object, NULL to ignore.
a newly allocated GObject, or NULL on error. [type GObject.Object][transfer full]
GException on failure.
Helper function for constructing GInitable object. This is similar to g_object_newv() but also initializes the object and returns NULL, setting an error on failure. Since 2.22