@Override
	public int hashCode() {
		return pc.hashCode() + uniq;			// Don't hash order, as this is mutable
	}
Decode a new Sequence number from the stream

@param decoder is the stream decoder

@return new sequence number
@throws DecoderException for an invalid encoding
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/SequenceNumber.java