private int[] read256ColorPaletteFromEndOfFile(final ByteSource byteSource) throws IOException {
        try (InputStream stream = byteSource.getInputStream()) {
            final long toSkip = byteSource.size() - 769;
            skipBytes(stream, (int) toSkip);
            return read256ColorPalette(stream);
        }
    }
Constructs a new instance with the little-endian byte order.
src/main/java/org/apache/commons/imaging/formats/pcx/PcxImageParser.java