Function g_bus_watch_name_on_connection

pub unsafe extern "C" fn g_bus_watch_name_on_connection(
    connection: *mut GDBusConnection,
    name: *const c_char,
    flags: GBusNameWatcherFlags,
    name_appeared_handler: GBusNameAppearedCallback,
    name_vanished_handler: GBusNameVanishedCallback,
    user_data: gpointer,
    user_data_free_func: GDestroyNotify,
) -> c_uint