src/ServiceProvider/DoctrineDbalServiceProvider.php
private function getDbsEventManagerDefinition(Container $container): callable
    {
        return function () use ($container) {
            $container['doctrine.dbal.dbs.options.initializer']();

            $managers = new Container();
            foreach ($container['doctrine.dbal.dbs.options'] as $name => $options) {
                $managers[$name] = function () {
                    return new EventManager();
                };
            }

            return $managers;
        };
    }
private function getDbsEventManagerDefinition(Container $container): callable
    {
        return function () use ($container) {
            $container['doctrine.dbal.dbs.options.initializer']();

            $managers = new Container();
            foreach ($container['doctrine.dbal.dbs.options'] as $name => $options) {
                $managers[$name] = function () {
                    return new EventManager();
                };
            }

            return $managers;
        };
    }
@param Container $container

@return callable