private static void cleanAllContentIds(@NotNull PersistentFSRecordsStorage records) throws IOException {
    int maxAllocatedID = records.maxAllocatedID();
    for (int fileId = FSRecords.ROOT_FILE_ID; fileId <= maxAllocatedID; fileId++) {
      if (records.getContentRecordId(fileId) != NULL_ID) {
        records.setContentRecordId(fileId, NULL_ID);
      }
    }
  }
private static void cleanAllContentIds(@NotNull PersistentFSRecordsStorage records)