span><span class="signature">(<wbr>)
            <span class="returntype parameter">&#8594; <a href="../dart-typed_data/ByteData-class.html">ByteData</a></span>
          </span>
                  </dt>
        <dd>
          The embedder can specify data that the isolate can request synchronously
on launch. This accessor fetches that data. <a href="../dart-ui/Window/getPersistentIsolateData.html">[...]</a>
                  
</dd>
        <dt id="render" class="callable">
          <span class="name"><a hr