a<span class="hl opt">,</span> indent<span class="hl opt">) {</span>
      <span class="hl kwa">if</span> <span class="hl opt">(</span>indent <span class="hl opt">==</span> <span class="hl kwa">null</span><span class="hl opt">) {</span>
        indent <span class="hl opt">=</span> <span class="hl kwa">true</span><span class="hl opt">;</span>
      <span class="hl opt">}</span>
    <span class="hl opt">};</span>

    <span class="hl kwa">return</span> Output<span class="hl opt">;</span>

  <span class="hl op