#define COMMON_IS_USER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), COMMON_TYPE_USER))
#define COMMON_USER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), COMMON_TYPE_USER, CommonUserClass))
+#define USER_LIST_SIGNAL_USER_ADDED "user-added"
+#define USER_LIST_SIGNAL_USER_CHANGED "user-changed"
+#define USER_LIST_SIGNAL_USER_REMOVED "user-removed"
+
+#define USER_SIGNAL_CHANGED "changed"
+
typedef struct
{
GObject parent_instance;