class BreakpointStoreOnSQLite implements DownloadStore {

    @Override public boolean isFileDirty(int id) {
        return onCache.isFileDirty(id);
    }

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

}