protected void putMetaData(long data) throws IOException {
    lockStorageWrite();
    try {
      if (myCollisionResolutionStorage.length() < META_DATA_OFFSET + 8 || getMetaData() != data) {
        myCollisionResolutionStorage.putLong(META_DATA_OFFSET, data);
      }
    }
    finally {
      unlockStorageWrite();
    }
  }
protected void putMetaData(long data)