@Override
	public void restoreState(Program restoreProgram, SaveState obj) {
		super.restoreState(restoreProgram, obj);
		ordinal = obj.getInt("_FUNCTION_PARAMETER_ORDINAL", -1);
		Function function = restoreProgram.getFunctionManager().getFunctionAt(functionAddr);
		if (function != null) {
			parameter = function.getParameter(ordinal);
		}
	}
Returns a String representation of this location.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/util/FunctionParameterFieldLocation.java