private static void safeClose(@Nullable Closeable enumerator, MavenIndexException[] exceptions) {
      try {
        if (enumerator != null) enumerator.close();
      }
      catch (IOException e) {
        MavenLog.LOG.warn(e);
        if (exceptions[0] == null) exceptions[0] = new MavenIndexException(e);
      }
    }
private static void safeClose(@Nullable Closeable enumerator, MavenIndexException[] exceptions)