registerHandlers example

$container->getParameterBag()->remove($busMiddlewareParameter);
            }

            if ($container->hasDefinition('data_collector.messenger')) {
                $this->registerBusToCollector($container, $busId);
            }
        }

        if ($container->hasDefinition('messenger.receiver_locator')) {
            $this->registerReceivers($container, $busIds);
        }
        $this->registerHandlers($container, $busIds);
    }

    private function registerHandlers(ContainerBuilder $container, array $busIds): void
    {
        $definitions = [];
        $handlersByBusAndMessage = [];
        $handlerToOriginalServiceIdMapping = [];

        foreach ($container->findTaggedServiceIds('messenger.message_handler', true) as $serviceId => $tags) {
            foreach ($tags as $tag) {
                if (isset($tag['bus']) && !\in_array($tag['bus'], $busIds, true)) {