  <div><h1><span class="kind-method">lock</span> method</h1></div>

    <section class="multi-line-signature">
      <span class="returntype"><a href="../../dart-async/Future-class.html">Future</a></span>
            <span class="name ">lock</span>
(<wbr><ol class="parameter-list"><li><span class="parameter" id="lock-param-orientation"><span class="type-annotation"><a href="../../dart-core/String-class.html">String</a></span> <span class="parameter-name">orientation</span></span></li>
</ol>)
      
    </se