title: How to get query firestore with geofirestore and get documents in swift
body: <p>I tried the code below to fetch the location data filtered by nearby certain location.
  but I don't know how to get documents.</p>
  <pre><code>FirebaseApp.configure()
          let db = Firestore.firestore()
          let geoFirestoreRef = db.collection(&quot;spot&quot;)
          let geoFirestore = GeoFirestore(collectionRef: geoFirestoreRef)
          
          // Query using CLLocation
          let center = CLLocation(latitude: 35.681236, longitude: 139.767125)
          // Query locations at [37.7832889, -122.4056973] with a radius of 100km
          var circleQuery = geoFirestore.query(withCenter: center, radius: 100.0)
  
          let _ = circleQuery.observe(.documentEntered, with: { (key, location) in
              geoFirestoreRef.document(key!).getDocument  { (document, error) in
                             if let document = document, document.exists {
                                 print(document)
                             } else {
                                 print(&quot;Document does not exist.&quot;)
                             }
                         }
              print(&quot;The document with documentID '\(key)' entered the search area and is at location '\(location)'&quot;)
          })
  </code></pre>
  <pre><code>circleQuery
  </code></pre>
  <p>This variable just return GFSCircleQuery object.
  I don't know how to fetch the actual documents filtered by query.</p>