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      </svg></a> </h3>
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<p>Suppose we have an object that has a property and a method observing that property.</p>
<pre class="language-javascript line-numbers"><code class="javascript language-javascript">App<span class="token punctuation">.</span>SomeThing <span class="token operator">=</span> Ember<span class="token punctuation">.</span>Object<span class="token punctuation">.</s