public byte []
getBase32String(base32 b32) throws IOException {
	String next = _getIdentifier("a base32 string");
	byte [] array = b32.fromString(next);
	if (array == null)
		throw exception("invalid base32 encoding");
	return array;
}
Gets the next token from a tokenizer and decodes it as base32.
@param b32 The base32 context to decode with.
@return The byte array containing the decoded string.
@throws TextParseException The input was invalid.
@throws IOException An I/O error occurred.
src/main/java/core/org/xbill/DNS/Tokenizer.java