"callable">
          <span class="name"><a href="dart-async/StreamView/listen.html">listen</a></span><span class="signature">(<wbr><span class="parameter" id="listen-param-onData"><span class="type-annotation">void</span> <span class="parameter-name">onData</span>(<span class="parameter" id="onData-param-value"><span class="type-annotation">T</span> <span class="parameter-name">value</span></span>), {</span> <span class="parameter" id="listen-param-onError"><span class="type-annotation"><a href="dart-core/