class ChecksumFileSystem extends FilterFileSystem {

  @Override
  public FSDataOutputStream create(Path f, FsPermission permission,
      boolean overwrite, int bufferSize, short replication, long blockSize,
      Progressable progress) throws IOException {
    return create(f, permission, overwrite, true, bufferSize,
        replication, blockSize, progress);
  }

  public  ChecksumFileSystem(FileSystem fs);

}