public void setMockLocation()
 {
     try {
         Location mockLocation = new Location(LocationManager.GPS_PROVIDER);
         mockLocation.setLongitude(66.66);
         mockLocation.setLatitude(99.99);
         Task voidTask = mFusedLocationProviderClient.setMockLocation(mockLocation);
         voidTask.addOnSuccessListener(new LocationSuccessListener((o) =>
         {
             TestTip.Inst.ShowText($"setMockLocation onSuccess:" +
                                   $"latitude: {mockLocation.getLatitude()} " +
                                   $"longitude: {mockLocation.getLongitude()}");
         })).addOnFailureListener(new HmsFailureListener((c) =>
         {
             TestTip.Inst.ShowText("setMockLocation onFailure");
         }));
     } catch (System.Exception e) {
         TestTip.Inst.ShowText("setMockLocation exception");
     }
 }