@Override
    public boolean equals(Object obj) {
        if (!(obj instanceof Hop)) {
            return false;
        }
        Hop rhs = (Hop)obj;
        if (selector.size() != rhs.selector.size()) {
            return false;
        }
        for (int i = 0; i < selector.size(); ++i) {
            if (!selector.get(i).equals(rhs.selector.get(i))) {
                return false;
            }
        }
        return true;
    }
<p>Returns a string representation of this that can be debugged but not
parsed.</p>

@return The debug string.
messagebus/src/main/java/com/yahoo/messagebus/routing/Hop.java