@Override
    public boolean equals(Object o) {
      if (!(o instanceof TXEntryStateWithRegionAndKey)) {
        return false;
      }
      return compareTo(o) == 0;
    }
Used to keep track of the region and key associated with a TXEntryState. Also used to sort the
entries into the order in which they will be applied.

@since GemFire 5.7
geode-core/src/main/java/org/apache/geode/internal/cache/TXState.java