void
rrFromWire(DNSInput in) throws IOException {
	footprint = in.readU16();
	alg = in.readU8();
	digestid = in.readU8();
	digest = in.readByteArray();
}
Creates a DS Record from the given data
@param digestid The digest id code.
@param key The key to digest
src/main/java/core/org/xbill/DNS/DSRecord.java