Synopsis

                    SwClient;
                    SwClientClass;
SwClient *          sw_client_new                       (void);
void                (*SwClientIsOnlineCallback)         (SwClient *client,
                                                         gboolean online,
                                                         gpointer userdata);
void                (*SwClientGetServicesCallback)      (SwClient *client);
void                sw_client_get_services              (SwClient *client,
                                                         SwClientGetServicesCallback cb,
                                                         gpointer userdata);
SwClientService *   sw_client_get_service               (SwClient *client,
                                                         const gchar *service_name);
void                sw_client_is_online                 (SwClient *client,
                                                         SwClientIsOnlineCallback cb,
                                                         gpointer userdata);