protected boolean trackMessage(FunctionStreamingReplyMessage m) {
      msgsProcessed++;

      if (m.isLastMessage()) {
        numMsgs = m.getMessageNumber() + 1;
      }
      return msgsProcessed == numMsgs;
    }
Return true if this is the very last reply msg to process for this member
geode-core/src/main/java/org/apache/geode/internal/cache/execute/FunctionStreamingResultCollector.java