title: how can I view the execution plan of a mongoose.js query
body: <p>I want to verify that the mongoose query that I'm creating is using my indexes.  Is there a way that I can view the final query that is generated to mongodb so that I can run a .explain() on the query?</p>
  
  <p>I can guess what the query it is generating is, but just wanted to verify.</p>
  
  <p>e.g.</p>
  
  <pre><code> var query = Post.find()
     .regex('lowerCaseTitle', searchRegEx)
     .$gte('status',0)
     .$lt('start', now)
     .$gt('end',now)
     .sort('total', -1)
     .limit(50);
  </code></pre>