public long
getTTL() throws IOException {
	String next = _getIdentifier("a TTL value");
	try {
		return TTL.parseTTL(next);
	}
	catch (NumberFormatException e) {
		throw exception("expected a TTL value");
	}
}
Gets the next token from a tokenizer and parses it as a TTL.
@return The next token in the stream, as an unsigned 32 bit integer.
@throws TextParseException The input was not valid.
@throws IOException An I/O error occurred.
@see TTL
src/main/java/core/org/xbill/DNS/Tokenizer.java