neValues"><span class="type-annotation"><a href="../../dart-core/Map-class.html">Map</a></span> <span class="parameter-name">zoneValues</span>}</span></li>
</ol>)
      
    </section>
    <section class="desc markdown">
      <p>Creates a new zone as a child of <code>this</code>.</p>
<p>The new zone uses the closures in the given <code>specification</code> to override
the current's zone behavior. All specification entries that are <code>null</code>
inherit the behavior from the parent zone (<code>this</cod