PixelsService service = PixelsService.getInstance();
PixelsService service = new PixelsService(PixelsService.ROOT_DEFAULT);
    public void testLastPlane()        throws IOException, DimensionsOutOfBoundsException    {        PixelsService service = PixelsService.getInstance();        PixelBuffer pixbuf = service.getPixelBuffer(pixels);        MappedByteBuffer plane = pixbuf.getPlane(pixels.getSizeZ() - 1,                                                 pixels.getSizeC() - 1,                                                 pixels.getSizeT() - 1);        int digestOffset = getDigestOffset(pixels.getSizeZ() - 1,                                           pixels.getSizeC() - 1,                                           pixels.getSizeT() - 1);        byte[] messageDigest = Helper.calculateMessageDigest(plane);                assertEquals(Helper.bytesToHex(originalDigests[digestOffset]),                     Helper.bytesToHex(messageDigest));    }