docs: void firePropertyChildRemoved(TreeNodeRemovedEvent event) {
  		if (this.nodeListeners != null) {
  			for (final TreeNodeListener listener : this.nodeListeners) {
  				if (listener != null) {
  					listener.treeNodeChildRemoved(event);
  				}
  			}
  		}
  		final N parentNode = getParentNode();
  		if (parentNode != null) {
  			parentNode.firePropertyChildRemoved(event);
  		}
  	}