 opt">.</span><span class="hl kwa">prototype</span><span class="hl opt">;</span> child<span class="hl opt">.</span><span class="hl kwa">prototype</span> <span class="hl opt">=</span> <span class="hl kwa">new</span> <span class="hl kwd">ctor</span><span class="hl opt">();</span> child<span class="hl opt">.</span>__super__ <span class="hl opt">=</span> parent<span class="hl opt">.</span><span class="hl kwa">prototype</span><span class="hl opt">;</span> <span class="hl kwa">return</span> child<span class="hl o