final GenericGifBlock block = readGenericGIFBlock(is, -1);
final byte[] bytes = block.appendSubBlocks();
final InputStream bais = new ByteArrayInputStream(bytes);
final int size = imageWidth * imageHeight;
final MyLzwDecompressor myLzwDecompressor = new MyLzwDecompressor(
lzwMinimumCodeSize, ByteOrder.LITTLE_ENDIAN);
imageData = myLzwDecompressor.decompress(bais, size);
} else {
final int LZWMinimumCodeSize = is.read();
if (getDebug()) {
System.out.println("LZWMinimumCodeSize: " + LZWMinimumCodeSize);
}