 {</span>
      <span class="hl kwa">this</span><span class="hl opt">.</span>indents <span class="hl opt">=</span> <span class="hl str">''</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    Output<span class="hl opt">.</span><span class="hl kwa">prototype</span><span class="hl opt">.</span>enter <span class="hl opt">=</span> <span class="hl kwa">function</span><span class="hl opt">() {</span>
      <span class="hl kwa">return this</span><span class="hl opt">.</span>indents <span clas