@Override
	public T evaluateVarnode(Program program, Varnode vn) {
		return evaluateVarnode(program, vn, new HashMap<>());
	}
Evaluate a varnode

@param program the program containing the varnode
@param vn the varnode to evaluate
@return the value of the varnode
Ghidra/Debug/ProposedUtils/src/main/java/ghidra/pcode/eval/AbstractVarnodeEvaluator.java