docs: public void unsubscribeAllResourcesFor(CmsObject cms, CmsPrincipal principal) throws CmsException {
  
          if (!isEnabled()) {
              throw new CmsRuntimeException(Messages.get().container(Messages.ERR_SUBSCRIPTION_MANAGER_DISABLED_0));
          }
          m_securityManager.unsubscribeAllResourcesFor(cms.getRequestContext(), getPoolName(), principal);
      }