ode>other</code> with the provided handlers overriding
the ones in <code>other</code>.
          <div class="constructor-modifier features">factory</div>
        </dd>
      </dl>
    </section>

    <section class="summary offset-anchor" id="instance-properties">
      <h2>Properties</h2>

      <dl class="properties">
        <dt id="createPeriodicTimer" class="property">
          <span class="name"><a href="dart-async/ZoneSpecification/createPeriodicTimer.html">createPeriodicTimer</a></span>
          <