title: Firestore - How create DocumentReference using path String
body: <p>Firebase realtime database allowed to create refrence using</p>
  
  <pre><code> var reference = db.ref(path);
  </code></pre>
  
  <p>Is there any method exist in firestore so that I can create document refrence using path String.</p>
  
  <p>If method exists how can I find path string in android and then how create document reference in node.js using that path. </p>