code: public void add(StatefulBeanO beanO) {
          BeanId id = beanO.beanId;
          TimeoutElement elt = beanO.ivTimeoutElement;
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              Tr.entry(tc, "add " + beanO.beanId + ", " + elt.timeout);
  
          // LIDB2775-23.4 Begins
          Object obj = ivStatefulBeanList.put(id, elt);
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled())
              Tr.debug(tc, (obj != null) ? "Stateful bean information replaced" : "Stateful bean information added");
          // LIDB2775-23.4 Ends
  
          synchronized (this) {
              if (numObjects == 0 && !ivIsCanceled) // F743-33394
              {
                  startAlarm();
              }
  
              numObjects++;
              numAdds++;
          }
  
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              Tr.exit(tc, "add");
      }
docs: Add a new bean to the list of beans to be checked for timeouts