namespace Example
{
    public class ActiveMap : IMap
    {
        private readonly Map _map;

        public ActiveMap(Map map)
        {
            _map = map;
        }

        public IReadOnlyList<Layer> GetLayersAsFlattenedList()
        {
            return _map.GetLayersAsFlattenedList();
        }

        public Task<(List<Geometry>, List<Geometry>)> GetSelectedGeometries()
        {

            return QueuedTask.Run(() =>
            {
                var selection = MapView.Active.Map.GetSelection();
                selection
                    .ForEachWithIndex((mapElement, index) =>
                    {
                     // logic
                    });
                return (parcelGeometries, sideWalkGeometries);
            });


        }
    }
}