cil">
        </a>
    </div>
    <hr>

    <div id="ember189155" class="ember-view"><p>As you learn about Ember, you'll see code like <code>Component.extend()</code> and
<code>DS.Model.extend()</code>. Here, you'll learn about this <code>extend()</code> method, as well
as other major features of the Ember object model.</p>
<h3 id="toc_defining-classes">Defining Classes <a href="#toc_defining-classes"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
        <path d="M326.61 185.4c59.75 59.8 58