How can I add multiple events in services.yml file as event Listeners in Doctrine symfony

I am using this:

my.listener:
        class: Acme\SearchBundle\Listener\SearchIndexer
        tags:
            - { name: doctrine.event_listener, event: postPersist }

Now if I try to listen for two events like this:

- { name: doctrine.event_listener, event: postPersist, preUpdate }

it gives an error.