docs: @Override
      public String getUserName() {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "getUserName");
          String userName = jcaConnectionFactory.getUserName();
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "getUserName", userName);
          return userName;
      }