code: protected void addToRecentlyInvalidatedList(String id) {
          if (!_smc.getCheckRecentlyInvalidList())
              return;
          if (com.ibm.websphere.ras.TraceComponent.isAnyTracingEnabled() && LoggingUtil.SESSION_LOGGER_WAS.isLoggable(Level.FINE)) {
              LoggingUtil.SESSION_LOGGER_WAS.logp(Level.FINE, methodClassName, "addToRecentlyInvalidatedList", "Adding to recently InvalidatedList");
          }
          synchronized (recentInvalidIds) {
              recentInvalidIds.put(id, id);
          }
      }
docs: /*
  Method used to keep track of ids that have been recently invalidated. If the checkRecentlyInvalidList
  property is set and we know that it has been recently invalidated, we will not query the backend for
  this session.