@Override
    public ExplorerNode ensureFolderPath(final DocPath docPath,
                                         final PermissionInheritance permissionInheritance) {
        return ensureFolderPath(docPath, explorerNodeService.getRoot(), permissionInheritance);
    }
@return True if any one of childNodes (or their descendants) has node info and is included
in treeModelOut
stroom-explorer/stroom-explorer-impl/src/main/java/stroom/explorer/impl/ExplorerServiceImpl.java