irtyAttributes<span class="token punctuation">;</span> <span class="token comment">// => false</span>
person<span class="token punctuation">.</span>isAdmin <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
person<span class="token punctuation">.</span>hasDirtyAttributes<span class="token punctuation">;</span> <span class="token comment">// => true</span>
person<span class="token punctuation">.</span><span class="token function">changedAttri