File contentFile = new File(storageDir, "CacheLocks" + DBBackup.CONTENT_FILE_SUFFIX);
// it is possible that backup was created on configuration without Backupable WorkspaceLockManager class
if (!PrivilegedFileHelper.exists(contentFile))
{
return new DummyDataRestore();
}
in = new ObjectInputStream(PrivilegedFileHelper.fileInputStream(contentFile));
int count = in.readInt();