@Override
	public void addOperandReference(int opIndex, Address refAddr, RefType type,
			SourceType sourceType) {
		if (refMgr == null)
			throw new UnsupportedOperationException();
		refMgr.addMemoryReference(address, refAddr, type, sourceType, opIndex);
	}
Add a user defined reference to the operand at the given index.
@see CodeUnit#addOperandReference(int, Address, RefType, SourceType)
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/util/PseudoCodeUnit.java