code: @Bean
      @ConditionalOnMissingBean
      RolloutApprovalStrategy rolloutApprovalStrategy(final UserDetailsService userDetailsService,
              final TenantConfigurationManagement tenantConfigurationManagement,
              final SystemSecurityContext systemSecurityContext) {
          return new DefaultRolloutApprovalStrategy(userDetailsService, tenantConfigurationManagement,
                  systemSecurityContext);
      }
docs: {@link DefaultRolloutApprovalStrategy} bean.
  
  @return a new {@link RolloutApprovalStrategy}