如何在DoctrineCacheBundle cacheDriver中使用多个命名空间？

doctrine_cache:
    providers:
        cache_provider1:
            type: pool
            pool: cache_pool1
        cache_provider2:
            type: pool
            pool: cache_pool2
    pools:
        cache_pool1:
            adapter: cache_adapter1
        cache_pool2:
            adapter: cache_adapter2
    adapters:
        cache_adapter1:
            type: redis
            redis:
                connection_id: cache_connection1
        cache_adapter2:
            type: redis
            redis:
                connection_id: cache_connection2
    connections:
        cache_connection1:
            host: localhost
            port: 6379
        cache_connection2:
            host: localhost
            port: 6380

doctrine:
    orm:
        metadata_cache_driver:
            type: service
            id: doctrine_cache.providers.cache_provider1
        result_cache_driver:
            type: service
            id: doctrine_cache.providers.cache_provider2
        query_cache_driver:
            type: service
            id: doctrine_cache.providers.cache_provider1

$cacheDriver = $container->get('doctrine_cache.providers.cache_provider1');
$cacheDriver->save('key', 'value', 3600, 'namespace1');

$cacheDriver = $container->get('doctrine_cache.providers.cache_provider2');
$cacheDriver->save('key', 'value', 3600, 'namespace2');