private MergeInfoHolder getHolder(final String key) {
    final MergeInfoHolder holder = myHolders.get(key);
    if (holder != null) {
      return holder;
    }
    return myHolders.get(key.endsWith(File.separator) ? key.substring(0, key.length() - 1) : key + File.separator);
  }
private MergeInfoHolder getHolder(final String key)