} else {
// Use hard-coded uuid for root node rather than generating
// a different uuid per repository instance; using a
// hard-coded uuid makes it easier to copy/move entire
// workspaces from one repository instance to another.
uuidFile.makeParentDirs();
OutputStream out = uuidFile.getOutputStream();
try {
out.write(ROOT_NODE_ID.toString().getBytes("US-ASCII"));
return ROOT_NODE_ID;
} finally {