class CategoriesPersistenceService extends PersistenceService<Categories> {

	@Override
	Categories defaultInstance() {
		try (InputStream stream = CategoriesPersistenceService.class.getResourceAsStream("default-categories.json")) {
			return read(stream);
		} catch (IOException e) {
			throw Throwables.propagate(e);
		}
	}

	@Inject  CategoriesPersistenceService(PersistenceGsonProvider gsonProvider, DataDirectoryLocator dataDirectoryLocator);

}