docs: protected void validateSessions() {
  
          try {
              CmsSessionManager sessionInfoManager = OpenCms.getSessionManager();
              if (sessionInfoManager != null) {
                  // will be null if only the shell is running
                  sessionInfoManager.validateSessionInfos();
              }
          } catch (Throwable t) {
              LOG.error(Messages.get().getBundle().key(Messages.LOG_THREADSTORE_CHECK_SESSIONS_ERROR_0), t);
          }
      }