code: public ContentInfo findMatch() {
  		byte[] readBytes;
  		if (byteCount < firstBytes.length) {
  			readBytes = Arrays.copyOf(firstBytes, byteCount);
  		} else {
  			readBytes = firstBytes;
  		}
  		return contentInfoUtil.findMatch(readBytes);
  	}
docs: Find a match from the bytes that have been read from the stream using {@link ContentInfoUtil#findMatch(byte[])}.