code: private MessageProcessorSearchResults matchMessage(MessageItem msg)
                      throws SIDiscriminatorSyntaxException
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(
                          tc,
                          "matchMessage",
                          new Object[] { msg });
  
          //Extract the message from the MessageItem
          JsMessage jsMsg = msg.getMessage();
  
          //  Match Consumers is only called for PubSub targets.
          TopicAuthorization topicAuth = _messageProcessor.getDiscriminatorAccessChecker();
          MessageProcessorSearchResults searchResults = new MessageProcessorSearchResults(topicAuth);
  
          // Defect 382250, set the unlockCount from MsgStore into the message
          // in the case where the message is being redelivered.
          int redelCount = msg.guessRedeliveredCount();
  
          if (redelCount > 0)
          {
              if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
                  SibTr.debug(tc, "Set deliverycount into message: " + redelCount);
              jsMsg.setDeliveryCount(redelCount);
          }
  
          // Get the matching consumers from the matchspace
          _matchspace.retrieveMatchingOutputHandlers(
                                                     _destination,
                                                     jsMsg.getDiscriminator(),
                                                     (MatchSpaceKey) jsMsg,
                                                     searchResults);
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(
                         tc,
                         "matchMessage",
                         new Object[] { searchResults });
  
          return searchResults;
      }
docs: Returns a list of matching OutputHandlers for a particular message.
  Note that this method takes a MessageProcessorSearchResults object
  from a pool. This object must be returned by the caller when it is
  finished with.
  
  @param msg
  @return