* @throws CIFSException if an error occurs
     */
    protected <T extends ServerMessageBlock2Response> T withOpen(final SmbTreeHandleImpl th, final ServerMessageBlock2Request<T> first,
            final ServerMessageBlock2Request<?>... others) throws CIFSException {
        return withOpen(th, Smb2CreateRequest.FILE_OPEN, 0x00120089, SmbConstants.FILE_SHARE_READ | SmbConstants.FILE_SHARE_WRITE, first,
                others);

        DataStoreException withNPE = new DataStoreException("NPE Error", new NullPointerException("Null value"));
        DataStoreException withCustom = new DataStoreException("Custom Error", new FessSystemException("System error"));

        assertTrue(withIOException.getCause() instanceof java.io.IOException);
        assertTrue(withNPE.getCause() instanceof NullPointerException);