private String getParamComment() {
		if (!isOutputParameter) {
			return comment;
		}
		return Objects.requireNonNullElse(comment, "") + "(Output Parameter)";

	}
If this is a static/global variable, stored at a ram address, return it's
ram address.

@return address of where this variable is stored, null if not ram address
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/DWARFVariable.java