title: Flutter/Dart QuerySnapshot isEqualTo or operator?
body: <p>I would like to ask if there is a document in the collection with the field "test" equal to 1 2 or 4. But unfortunately I have not found a suitable solution.</p>
  
  <p>This is my approach Unfortunately, this does not work here (is Equal To 1 | 2 | 4). Is that no or operator? (|)</p>
  
  <pre><code>Future getPostsToday() async { 
     ...
      var firestore =  Firestore.instance;
      QuerySnapshot qn = await firestore.collection("Data").where("test",   isEqualTo: 1 | 2 | 4 ).getDocuments();
      return qn.documents;  
   }
  </code></pre>