@Override
    public String toString() {
      return "RemoveAllReplyMessage " + "processorid=" + processorId
          + " returning " + result + " exception=" + getException()
          + " versions= " + versions;
    }
Processes this message. This method is invoked by the receiver of the message.

@param dm the distribution manager that is processing the message.
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/RemoveAllPRMessage.java