return getRegion(size, offset);
byte[] nullPlane = PixelsService.nullPlane;  for (int i = 0; i < PixelsService.NULL_PLANE_SIZE; i++) if (region.get(i) != nullPlane[i]) return region;  return null;
    public MappedByteBuffer getPlane(Integer z, Integer c, Integer t)        throws IOException, DimensionsOutOfBoundsException    {        Long offset = getPlaneOffset(z, c, t);        Integer size = getPlaneSize();        return getRegion(size, offset);    }