@Override
    public Object get(int idx) {
      int archiveIdx = 0;
      StatArchiveReader.StatArchiveFile[] archives = getArchives();
      for (StatArchiveFile f : archives) {
        if (idx < (archiveIdx + f.resourceInstSize)) {
          return f.resourceInstTable[idx - archiveIdx];
        }
        archiveIdx += f.resourceInstSize;
      }
      return null;
    }
Wraps an instance of StatSpec but alwasy returns a combine type of NONE.
geode-core/src/main/java/org/apache/geode/internal/statistics/StatArchiveReader.java