title: GraphFrames Shortest Paths gives distance and not the actual path
body: <p>I'm new to Graphframes and trying to implement edge-betweenness. </p>
  
  <p>I tried using shortest Paths function that is built-in. It returns the distance from the source to the destination vertex but not the actual path between them.</p>
  
  <p>The output is:</p>
  
  <pre><code>| id |   name  | age | distances|
  |  g | Gabriel | 33  | [e -&gt; 2] |
  </code></pre>
  
  <p><strong>Is there any way to get the actual path instead of distance value ?</strong> </p>
  
  <p>If anyone could tell me how to implement edge-betweenness efficiently in graph frames that would be really great.</p>