public void setMemoryIndexStoreEntry(Object deserializedIndexKey, RegionEntry regionEntry) {
      this.deserializedIndexKey = deserializedIndexKey;
      this.regionEntry = regionEntry;
      updateInProgress = regionEntry.isUpdateInProgress();
      value = getTargetObject(regionEntry);
    }
A wrapper over the entry in the CSL index map. It maps IndexKey -> RegionEntry
geode-core/src/main/java/org/apache/geode/cache/query/internal/index/MemoryIndexStore.java