pub unsafe extern "C" fn flatpak_installation_update_appstream_full_sync(
self_: *mut FlatpakInstallation,
remote_name: *const c_char,
arch: *const c_char,
progress: FlatpakProgressCallback,
progress_data: gpointer,
out_changed: *mut gboolean,
cancellable: *mut GCancellable,
error: *mut *mut GError
) -> gboolean