void txApplyInvalidatePart2(RegionEntry regionEntry, Object key, boolean didDestroy,
      boolean didInvalidate) {
    if (testCallable != null) {
      testCallable.call(this, Operation.INVALIDATE, regionEntry);
    }
    if (didInvalidate) {
      updateStatsForInvalidate();
      // clearing index of the old value performed in AbstractRegionMap
    }
    if (didDestroy) {
      entryUserAttributes.remove(key);
    }
  }
Called by lower levels, while still holding the write sync lock, and the low level has
completed its part of the basic destroy
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java