sponseCallback-param-data"><span class="type-annotation"><a href="dart-typed_data/ByteData-class.html">ByteData</a></span> <span class="parameter-name">data</span></span>)
            <span class="returntype parameter">&#8594; void</span>
          </span>
                  </dt>
        <dd>
          Signature for responses to platform messages. <a href="dart-ui/PlatformMessageResponseCallback.html">[...]</a>
                  
</dd>
        <dt id="PointerDataPacketCallback" class="callable">
          <