pan> <span class="nv">change</span><span class="p">:</span> <span class="p">[</span><span class="kt">NSKeyValueChangeKey</span> <span class="p">:</span> <span class="kt">Any</span><span class="p">]?,</span> <span class="nv">context</span><span class="p">:</span> <span class="kt">UnsafeMutableRawPointer</span><span class="p">?)</span> <span class="p">{</span>
    <span class="k">if</span> <span class="n">keyPath</span> <span class="o">==</span> <span class="s">"effectiveTheme"</span> <span class="p">{</span>