title: How to display data only which can populate[mongoose]
body: <p>Is possible to display details from collection where has inside population <code>role: '4edd40c86762e0fb12000002'</code> ?</p>
  
  <pre><code>recommendModel.find({
          userId: userId
      })
              .populate('recommendedBy',{role: '4edd40c86762e0fb12000002'})
              .exec(handle().many.bind(null, 'message', res));
  </code></pre>
  
  <p>So for result where <code>populate</code> return null I also don't need record from <code>recommendModel.find</code> for that</p>