@Override
  void addMapping(Object key, Object value, RegionEntry entry) throws IMQException {
    // Only called from CompactMapRangeIndex
    indexStore.addMapping(key, entry);
  }
@param add true if adding, false if removing from index
geode-core/src/main/java/org/apache/geode/cache/query/internal/index/CompactRangeIndex.java