public String getValue(final Boolean active) {
        if (active == null) {
            return rawName;
        } else {
            return rawName + (active ? INTERNAL_YES : INTERNAL_NO);
        }
    }
get the value of this attribute for the given activation state, e.g. "dogs_yes" or "wheelchair_no".
main/src/main/java/cgeo/geocaching/enumerations/CacheAttribute.java