@Override
  public void clear() throws StorageException {
    try {
      myMap.closeAndDelete();
    }
    catch (Exception ignored) {
    }
    try {
      initMapAndCache();
    }
    catch (IOException e) {
      throw new StorageException(e);
    }
    catch (RuntimeException e) {
      unwrapCauseAndRethrow(e);
    }
  }
@Override
  public void clear()