title: Flutter: futurebuilder of firestore documents
body: <p>I want to get the documents of a few users (in my collection: users).
  I stored all the ID's that I want in a list.</p>
  
  <pre><code>List shortIDList = [12345, 23425, 32453]
  </code></pre>
  
  <p>I'm trying this function to get the users from the shortIDList.</p>
  
  <pre><code> shortIDList.forEach((element) =&gt; getFirestoreUsers(st: element));
  
   getFirestoreUsers({String st}) async {
      await Firestore.instance
          .collection('users')
          .document('$st')
          .get()
          .then((DocumentSnapshot ds) {
        print(ds.data);
     // I would like to add all these documents to a futurebuilder
      });
    }
  </code></pre>
  
  <p>I would like to add all the documents (to a new list?) That I can use in a futurebuilder, to display all the user information example: profile picture, name etc...</p>
  
  <p>Is that possible?</p>
  
  <p>Thanks!</p>