span class="sd">        &quot;&quot;&quot;</span>
        <span class="n">leaves</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_leaves</span><span class="p">()</span>

        <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">labels</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
            <span cl