n>length <span class="hl opt">:</span> <span class="hl kwa">void</span> <span class="hl num">0</span><span class="hl opt">) {</span>
          <span class="hl kwa">return</span> errors<span class="hl opt">;</span>
        <span class="hl opt">}</span> <span class="hl kwa">else</span> <span class="hl opt">{</span>
          <span class="hl kwa">if</span> <span class="hl opt">(</span>output <span class="hl opt">==</span> <span class="hl kwa">null</span><span class="hl opt">) {</span>
            output <span 