  <span class="global">print</span>(<span class="string">"******"</span>)
    <span class="global">print</span>(<span class="string">"changed properties:"</span>)
    <span class="keyword">for</span> k, v <span class="keyword">in</span> <span class="global">pairs</span>(changed) <span class="keyword">do</span>
      <span class="global">print</span>(<span class="string">"name"</span>, k, <span class="string">"ne value"</span>, v)
    <span class="keyword">end</span>
    <span class="global">print</span>(<sp