private void decodeVarnode(Decoder decoder) throws DecoderException {
		int el = decoder.openElement(ELEM_VARNODES);
		for (;;) {
			int subId = decoder.peekElement();
			if (subId == 0) {
				break;
			}
			Varnode.decode(decoder, this);
		}
		decoder.closeElement(el);
	}
return all PcodeOps associated with a particular instruction Address
@param addr -- Address of instruction generating PcodeOps
@return -- Iterator to PcodeOps
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/PcodeSyntaxTree.java