>
<span class="w">          </span><span class="k">this</span><span class="p">.</span><span class="nx">_walk</span><span class="p">(</span><span class="nx">child</span><span class="p">,</span><span class="w"> </span><span class="nx">accumulator</span><span class="p">)</span>
<span class="w">        </span><span class="p">})</span>
<span class="w">      </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><s