docs: private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
  		in.defaultReadObject();
  		if (this.children != null) {
  			final N me = toN();
  			for (final NaryTreeNode<D, N> child : this.children) {
  				if (child != null) {
  					child.setParentNodeReference(me, false);
  				}
  			}
  		}
  	}