</dt>
            <dd>
                
            </dd>
        </dl>
      </section>


      <section class="summary" id="instance-methods">
          <h2>Methods</h2>
          <dl class="callables">
              <dt id="back" class="callable">
                  <a href="polymer_app_layout/HistoryBase/back.html"><span class="name ">back</span></a><span class="signature">(<wbr>)
                      &#8594;
                      <span class="returntype">void</span>
                  </span>
          