ff and
begin resolving the next (child) route's model, pausing if it too is a
promise, and so on, until all destination route models have been
resolved. The values passed to the <code>setupController</code> hook for each route
will be the fulfilled values from the promises.</p>
<p>A basic example:</p>
<div class="filename javascript"><div class="ribbon"></div><span>app/routes/tardy.js</span><pre class="language-javascript line-numbers"><code class="javascript language-javascript"><span class="token keyword"