ary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">typedef RegisterBinaryCallbackHandler
    = ZoneBinaryCallback&lt;R, T1, T2&gt; Function&lt;R, T1, T2&gt;(Zone self,
        ZoneDelegate parent, Zone zone, R Function(T1 arg1, T2 arg2) f);</code></pre>
    </section>

  </div> <!-- /.main-content -->

  <div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
  </div><!--/.sidebar-o