…as service locator arguments (IonBazan)This PR was merged into the 5.4 branch.Discussion----------[DependencyInjection] Allow injecting tagged iterator as service locator arguments| Q             | A| ------------- | ---| Branch?       | 5.4| Bug fix?      | no| New feature?  | yes| Deprecations? | no| Tickets       | -| License       | MIT| Doc PR        |symfony/symfony-docs#15821Not sure if this is a feature or bug fix - kindly update the description and target branch and I will backport the changes for older version if needed.This feature allows creating a named (reusable) service locator using tagged services:```ymlservices:    _instanceof:        App\Command\HandlerInterface:            tags: ['app.command_handler']    app.command_handlers:        class: Symfony\Component\DependencyInjection\ServiceLocator        arguments: [!tagged_iterator { tag: 'app.command_handler', default_index_method: 'getCommandName' }]    App\CommandBus:        arguments: ['`@app`.command_handlers']    App\AnotherCommandBus:        arguments: ['`@app`.command_handlers']```Prior to this change, following error would be thrown:```Invalid definition for service "app.command_handlers": an array of references is expected as first argument when the "container.service_locator" tag is set.```Commits-------7c86ac8 Allow injecting tagged iterator as service locator arguments