Synopsis

                    TumblerProviderFactoryPrivate;
                    TumblerProviderFactoryClass;
                    TumblerProviderFactory;
TumblerProviderFactory * tumbler_provider_factory_get_default
                                                        (void);
GList *             tumbler_provider_factory_get_providers
                                                        (TumblerProviderFactory *factory,
                                                         GType type);