+GLIB_AVAILABLE_IN_ALL
+GSettingsBackend * g_settings_backend_get_default (void);
+
+GLIB_AVAILABLE_IN_ALL
+GSettingsBackend * g_keyfile_settings_backend_new (const gchar *filename,
+ const gchar *root_path,
+ const gchar *root_group);
+
+GLIB_AVAILABLE_IN_ALL
+GSettingsBackend * g_null_settings_backend_new (void);
+
+GLIB_AVAILABLE_IN_ALL
+GSettingsBackend * g_memory_settings_backend_new (void);
+