s="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</span> <span class="parameter-name">initialValue</span>, </span> <span class="parameter" id="fold-param-combine"><span class="type-annotation">S</span> <span class="parameter-name">combine</span>(<span class="parameter" id="combine-param-previous"><sp