to a new event. <a href="dart-async/Stream/asyncMap.html">[...]</a>
          <div class="features">inherited</div>
</dd>
        <dt id="cast" class="callable inherited">
          <span class="name"><a href="dart-async/Stream/cast.html">cast</a></span><span class="signature">&lt;R&gt;</span><span class="signature">(<wbr>)
            <span class="returntype parameter">&#8594; <a href="dart-async/Stream-class.html">Stream</a><span class="signature">&lt;R&gt;</span></span>
          </span>
        </dt>
  