@Override
  public boolean dropMessageWhenMembershipIsPlayingDead() {
    return true;
  }
Used for partitioned region messages which support direct ack responses. Direct ack should be
used for message with a response from a single member, or responses which are small.

Messages that extend this class *must* reply using the ReplySender returned by
{@link DistributionMessage#getReplySender(DistributionManager)}

Additionally, if the ReplyProcessor used for this message extends PartitionResponse, it should
pass false for the register parameter of the PartitionResponse.
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/PartitionMessageWithDirectReply.java