@Override
    public void move(final ExplorerTreeNode node, final ExplorerTreeNode parent) {
        moveTo(node, parent, -1);
    }
Get the root node containing a particular node, or the node itself if it is a root node.
stroom-explorer/stroom-explorer-impl-db/src/main/java/stroom/explorer/impl/db/ExplorerTreeDaoImpl.java