- * @type: (out) (allow-none): a location to store the type of the
- * loaded icon, %NULL to ignore.
- * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
- * @error: a #GError location to store the error occurring, or %NULL to
+ * @type: (out) (optional): a location to store the type of the loaded
+ * icon, %NULL to ignore.
+ * @cancellable: (allow-none): optional #GCancellable object, %NULL to