我需要根据消息中的参数“host”将消息分派到不同的vhost/transport。是否可以在Symfony 4的标准Messenger组件中执行此操作。*？我在每台服务器上都有工作机，并且所有工作机都连接到具体的vhost。

framework:
    messenger:
        serializer:
            default_serializer: messenger.transport.symfony_serializer
            symfony_serializer:
                format: json
                context: { }
        transports:
            wendy:
                dsn: '%env(MESSENGER_TRANSPORT_DSN)%/server-wendy'
                options:
                    exchange:
                        name: wendy
                        type: direct
                    queues:
                        virtual_hosts:
                            durable: 1
                            binding_keys: ['virtual_hosts']
                        ftp:
                            durable: 1
                            binding_keys: ['ftp']
            stan:
                dsn: '%env(MESSENGER_TRANSPORT_DSN)%/server-stan'
                options:
                    exchange:
                        name: stan
                        type: direct
                    queues:
                        virtual_hosts:
                            durable: 1
                            binding_keys: ['virtual_hosts']
                        ftp:
                            durable: 1
                            binding_keys: ['ftp']

        routing:
            # Route your messages to the transports
            'App\Message\VirtualHostNotification': [wendy, stan]

例如：

$this->messageBus->dispatch(
    new VirtualHostNotification($virtualHost),
    [new AmqpStamp('wendy.virtual_hosts', AMQP_NOPARAM)],
    $transport,
    $vhost
);