private void AttachLayerHandler(Layer layer)
 {
     _layerPropertyChangedListeners.Attach(layer, "ShowLegend");
 }
 private void AttachLayerHandler(Layer layer)
 {
     _layerPropertyChangedListeners.Attach(layer, "IsVisible");
     _layerPropertyChangedListeners.Attach(layer, "Status");
     layer.PropertyChanged += Layer_PropertyChanged;
 }