class BreakpointStoreOnSQLite implements DownloadStore {

    @Override public boolean markFileClear(int id) {
        if (onCache.markFileClear(id)) {
            helper.markFileClear(id);
            return true;
        }

        return false;
    }

      BreakpointStoreOnSQLite(BreakpointSQLiteHelper helper, BreakpointStoreOnCache onCache);
    public  BreakpointStoreOnSQLite(Context context);

}