="dart-core/String-class.html">String</a></span> <span class="parameter-name">eventKind</span>, </span> <span class="parameter" id="postEvent-param-eventData"><span class="type-annotation"><a href="dart-core/Map-class.html">Map</a></span> <span class="parameter-name">eventData</span></span>)
    </section>
    <section class="desc markdown">
      <p>Post an event of <code>eventKind</code> with payload of <code>eventData</code> to the <code>Extension</code>
event stream.</p>
    </section>
    
    <section