pan><span class="token string">'Full name changed'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">.</span><span class="token function">observes</span><span class="token punctuation">(</span><span class="token string">'fullName'</span><span class="token punctuation">)</span>


<span class="token comment">// Instead, do this:</span>
<span class="token literal-property property">fullNameDidChange</sp