/// <summary>
        /// Minulí pozice zůstávají na mapě
        /// </summary>
        private void DrawDebugPosition()
        {
            if (debugPositionCircle != null)
            {
                debugPositionCircle.Dispose();
            }
            debugPositionCircle = new CircleOptions();
            debugPositionCircle.InvokeCenter(new LatLng(customMap.DebugPosition.Latitude, customMap.DebugPosition.Longitude));
            debugPositionCircle.InvokeRadius(50);
            debugPositionCircle.InvokeFillColor(0X66FF0000);
            debugPositionCircle.InvokeStrokeColor(0X66FF0000);
            debugPositionCircle.InvokeStrokeWidth(0);


            NativeMap.AddCircle(debugPositionCircle);
        }