pan>
        <span class="n">chunksize</span><span class="p">:</span> <span class="nb">int</span><span class="p">,</span>
    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">BoundingBox</span><span class="p">:</span>
<span class="w">        </span><span class="sd">&quot;&quot;&quot;Get the bounding box of a chunk with index &lt;x&gt;,&lt;y&gt;.&quot;&quot;&quot;</span>
        <span class="n">left</span><span class="p">,</span> <span class="n">bottom</span><span class="p">,</span> <spa