code: protected void fireLayerRemovedEvent(MapLayer layer, int oldChildIndex) {
  		fireLayerHierarchyChangedEvent(new MapLayerHierarchyEvent(
  				this, layer, Type.REMOVE_CHILD, oldChildIndex, layer.isTemporaryLayer()));
  	}
docs: Fire the event that indicates a layer was removed.
  
  @param layer is the removed layer.
  @param oldChildIndex the old child index.