dart-ui/Window/updateSemantics.html">updateSemantics</a></span><span class="signature">(<wbr><span class="parameter" id="updateSemantics-param-update"><span class="type-annotation"><a href="../dart-ui/SemanticsUpdate-class.html">SemanticsUpdate</a></span> <span class="parameter-name">update</span></span><wbr>)
            <span class="returntype parameter">&#8594; void</span>
          </span>
                  </dt>
        <dd>
          Change the retained semantics data about this window. <a href="../da