@Override
public boolean equals(Object oth) {
if (this == oth) return true;
else if (!getClass().isInstance(oth)) return false;
DirWrapper<?> other = (DirWrapper<?>) oth;
if (!get().equals(other.get())) return false;
if (hasDirection() && other.hasDirection()) return getDirection().equals(other.getDirection());
else if (!hasDirection() && !other.hasDirection()) return true;
else return false;
}
