title: Lazy loading in Cloud Firestore
body: <p>So for example I have a collection of <code>tasks</code> inside a document <code>my-task</code> inside a collection of <code>comments</code></p>
  
  <p><code>tasks/my-task/comments</code></p>
  
  <p>Is there a way to download the document along with the sub collection it holds</p>
  
  <p>Adding something to the following to make some eager load of the sub collection?
  <code>firebaseDb.collection('tasks').onSnapshot(snapshot =&gt; { }</code></p>