long updateIndexUseStats(boolean updateStats) {
    long result = 0;
    if (updateStats) {
      internalIndexStats.incUsesInProgress(1);
      result = System.nanoTime();
    }
    return result;
  }
Get statistics information for this index.
geode-core/src/main/java/org/apache/geode/cache/query/internal/index/AbstractIndex.java