public byte []
getHex() throws IOException {
	return getHex(false);
}
Gets the remaining string tokens until an EOL/EOF is seen, concatenates
them together, and converts the hex encoded data to a byte array.
@return The byte array containing the decoded strings, or null if there
were no strings to decode.
@throws TextParseException The input was invalid.
@throws IOException An I/O error occurred.
src/main/java/core/org/xbill/DNS/Tokenizer.java