code: public long getNumberOfQueuedMessages() {
  		if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
  			SibTr.entry(tc, "getNumberOfQueuedMessages");
  
  		long depth = itemStream.getTotalMsgCount();
  
  		if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
  			SibTr.exit(tc, "getNumberOfQueuedMessages", Long.valueOf(depth));
  
  		return depth;
  	}
docs: /*
  (non-Javadoc)
  
  @see
  com.ibm.ws.sib.processor.runtime.SIMPLocalTopicSpaceControllable#getDepth
  ()