   // this line already exists
    this.siblingPage = pageStep(parent, valueAccessor());
    // calculate the path to the sibling page as a computed observable
    this.path = ko.computed(function () {
        var value = this.siblingPage();
        return value.getFullRoute()().join('/');
    }, this);
};
</pre>
<p>
    Let us bind the path and title to the element.
</p>
<pre data-bind="prettyprint: {}" class="prettyprint linenums">
NextPage.prototype.bind = function () {
    // Here we bind the text insid