code: protected final void closeConnection(final JsMessagingEngine messagingEngine) {
  
          final String methodName = "closeConnection";
          if (TraceComponent.isAnyTracingEnabled() && TRACE.isEntryEnabled()) {
              SibTr.entry(this, TRACE, methodName, messagingEngine);
          }
  
          closeConnection(messagingEngine.getUuid().toString());
  
          if (TraceComponent.isAnyTracingEnabled() && TRACE.isEntryEnabled()) {
              SibTr.exit(this, TRACE, methodName);
          }
  
      }
docs: Closes the connection for the given messaging engine if there is one
  open.
  
  @param messagingEngine
  the messaging engine to close the connection for