en the rows and columns of the matrix are determined by the labels internal to the MergeTree.</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="k">if</span> <span class="nb">type</span> <span class="o">==</span> <span class="s1">&#39;leaves&#39;</span><span class="p">:</span>
            <span class="c1"># print(&#39;leaf version&#39;)</span>
            <span class="n">nodes</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_