code: @Api
  	public void setVisible(boolean visible) {
  		if (visible != this.visible) {
  			this.visible = visible;
  			updateShowing(false);
  			handlerManager.fireEvent(new LayerShownEvent(this));
  		}
  	}
docs: Make the layer visible or invisible.
  
  @param visible
  the visible to set
  @since 1.10.0