indoorLevelUp method
void
indoorLevelUp()
Implementation
void indoorLevelUp() {
if (_mapViewPosition == null) return;
if (_mapViewPosition!.zoomLevel >= displayModel.maxZoomLevel) return;
MapViewPosition newPosition =
MapViewPosition.indoorLevelUp(_mapViewPosition!);
_mapViewPosition = newPosition;
_injectPosition.add(newPosition);
}