id="SemanticsActionCallback-param-action"><span class="type-annotation"><a href="dart-ui/SemanticsAction-class.html">SemanticsAction</a></span> <span class="parameter-name">action</span>, </span> <span class="parameter" id="SemanticsActionCallback-param-args"><span class="type-annotation"><a href="dart-typed_data/ByteData-class.html">ByteData</a></span> <span class="parameter-name">args</span></span>)
            <span class="returntype parameter">&#8594; void</span>
          </span>
                  </dt