title: flutter where should I put firestore timestamp setting on Android
body: <p>When using <code>firestore</code> console message saying you need to write timestamp setting.
  On iOS I wrote in <code>appdelegete</code> and no message anymore but I'm from iOS land so I'm not sure where I should put those on Android side.
  Where should I put those?</p>
  
  <p><strong>Console message</strong></p>
  
  <pre><code>Firestore(25948):
  W/Firestore(25948): FirebaseFirestore firestore = FirebaseFirestore.getInstance();
  W/Firestore(25948): FirebaseFirestoreSettings settings = new FirebaseFirestoreSettings.Builder()
  W/Firestore(25948):     .setTimestampsInSnapshotsEnabled(true)
  W/Firestore(25948):     .build();
  W/Firestore(25948): firestore.setFirestoreSettings(settings);
  </code></pre>