code: @Override
  	protected void initialiseComponentModel() {
  		super.initialiseComponentModel();
  		// Copy the custom tree (if set) to allow the nodes to be updated per user
  		TreeItemIdNode custom = getCustomTree();
  		if (custom != null) {
  			TreeItemIdNode copy = TreeItemUtil.copyTreeNode(custom);
  			setCustomTree(copy);
  		}
  	}
docs: {@inheritDoc}