if (overridden != Symbol.NONE && !isSameAs(overridden.nextType(), method.nextType()))
if (!overridden.isNone() && !isSameAs(overridden.nextType(), method.nextType()))
    public void addBridgeMethodsTo(Symbol method) {        assert method.owner().isClass() && !method.owner().isInterface();        Symbol overridden = getOverriddenMethod(method);        if (overridden != Symbol.NONE && !isSameAs(overridden.nextType(), method.nextType()))            addBridge(method.owner(), method, overridden);    }