class="returntype"><a href="dart-ui/SemanticsUpdate-class.html">SemanticsUpdate</a></span>
            <span class="name ">build</span>
(<wbr>)
      
    </section>
    <section class="desc markdown">
      <p>Creates a <a href="dart-ui/SemanticsUpdate-class.html">SemanticsUpdate</a> object that encapsulates the updates recorded
by this object.</p>
<p>The returned object can be passed to <a href="dart-ui/Window/updateSemantics.html">Window.updateSemantics</a> to actually
update the semantics retained by th