code: @Bean
      @ConditionalOnMissingBean
      EventEntityManager eventEntityManager(final TenantAware aware, final EntityManager entityManager) {
          return new JpaEventEntityManager(aware, entityManager);
      }
docs: {@link EventEntityManager} bean.
  
  @param aware
  the tenant aware
  @param entityManager
  the entitymanager
  @return a new {@link EventEntityManager}