etes once all buffered data is accepted by the
underlying <a href="dart-async/StreamConsumer-class.html">StreamConsumer</a>. <a href="dart-io/IOSink/flush.html">[...]</a>
          <div class="features">inherited</div>
</dd>
        <dt id="fold" class="callable inherited">
          <span class="name"><a href="dart-async/Stream/fold.html">fold</a></span><span class="signature">&lt;S&gt;</span><span class="signature">(<wbr><span class="parameter" id="fold-param-initialValue"><span class="type-annotation">S<