private void GetAllPatrolsAroundPoint()
        {
            var client = new ServiceLayerClient();

            var task = client.GetNearByPatrolsByLatLonAsync(Longitude, Latitude, 5);
            var obs  = task.ToObservable();

            obs.Subscribe((x) => AddNearPatrols(x == null ? new List <PatrolLastLocationDTO>() : x.ToList()));
        }