lass="token punctuation">;</span> <span class="token comment">// => true</span>
person<span class="token punctuation">.</span><span class="token function">changedAttributes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// => { isAdmin: [false, true] }</span>

person<span class="token punctuation">.</span><span class="token function">rollbackAttributes</span><span class="token punctuation">(</span><sp