@Override
    public String toString() {
      return getClass().getName() + "(sender=" + getSender()
          + "; processorId=" + processorId + "; PRId=" + getId()
          + ")";
    }
Empty constructor to conform to DataSerializable interface
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/IdentityRequestMessage.java