code: protected void issueDepthIntervalMessage(long depth)
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(tc, "issueDepthIntervalMessage", new Long(depth));
  
          // Destination {0} on messaging engine {1} has reached a depth of {2} messages
          SibTr.info(tc, "DESTINATION_DEPTH_INTERVAL_REACHED_CWSIP0787",
                     new Object[] { destinationHandler.getName(),
                                   mp.getMessagingEngineName(),
                                   new Long(depth) });
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(tc, "issueDepthIntervalMessage");
      }
docs: Issue an informational message informing that a depth interval has been crossed
  (510343)
  
  @param depth