title: How to create a self closing element in CKEditor?
body: <p>I want to create a custom self closing node in CKeditor, is there a way to do this?
  My code so far: </p>
  
  <pre><code>this.videoElement = editor.document.createElement('cfwvideo');
  this.videoElement.setAttribute('src', videoSource);
  editor.insertElement(this.videoElement);
  </code></pre>