t;<wbr><span class="type-parameter">R</span>&gt;</span><span class="signature">(<wbr>)
            <span class="returntype parameter">&#8594; <a href="../dart-async/Stream-class.html">Stream</a><span class="signature">&lt;<wbr><span class="type-parameter">R</span>&gt;</span></span>
          </span>
                  </dt>
        <dd class="inherited">
          Adapt this stream to be a <code>Stream&lt;R&gt;</code>. <a href="../dart-async/Stream/cast.html">[...]</a>
                  <div class="features"