title: How to document an event emitter returned
body: <p>How to document the events emitted by <code>stream</code> returned in <code>MyFunc()</code> with JSDoc?</p>
  
  <pre><code>/**
   * [MyFunc description]
   * @param  {Object} opts - [description]
   * @return {Stream} - [description]
   */
  function MyFunc (opts) {
    // stream is an EventEmitter
    var stream = new MyEventEmitter();
  
    stream.emit('event1', ... );
    stream.emit('event2', ... );
  
    return stream;
  }
  </code></pre>