@Override
	public String getSerializationString() {
		String outputId = toExternalId(id);
		return outputId + " = " + getValueOutput();
	}
Constructor used when the FontValue will inherit its {@link Font} from another FontValue. The
font value field will be null.
@param id the id for this FontValue
@param refId the id of another FontValue that this FontValue will inherit from
Ghidra/Framework/Gui/src/main/java/generic/theme/FontValue.java