pub unsafe extern "C" fn g_dbus_proxy_new_for_bus_sync(
    bus_type: GBusType,
    flags: GDBusProxyFlags,
    info: *mut GDBusInterfaceInfo,
    name: *const c_char,
    object_path: *const c_char,
    interface_name: *const c_char,
    cancellable: *mut GCancellable,
    error: *mut *mut GError
) -> *mut GDBusProxy