问我是否可以使用单个Pulsar客户端发布/消费Apache pulsar的多个命名空间和主题？

EN

message CommandProducer {
  "topic" : "persistent://my-property/my-cluster/my-namespace/my-topic",
  "producer_id" : 1,
  "request_id" : 1
}

message CommandSend {
  "producer_id" : 1,
  "sequence_id" : 0,
  "num_messages" : 1
}

       // Create client object
        PulsarClient client = PulsarClient.builder()
                .serviceUrl("pulsar+ssl://useast2.aws.kafkaesque.io:6651")
                .authentication(
                    AuthenticationFactory.token("eyJhbGciOiJS...")
                )
                .build();

        // Create producer on a topic
        Producer<byte[]> producer1 = client.newProducer()
                .topic("persistent://tenant/local-useast2-aws/test-topic4")
                .create();

        // Create another producer on a different namespace/topic
        Producer<byte[]> producer2 = client.newProducer()
                .topic("persistent://tenant/namespace2/test-topic5")
                .create();

        // Send messages on the producers
        producer1.newMessage().value("ping from producer1".getBytes()).send();
        producer2.send("ping".getBytes());

        // Send close the producers
        producer1.close();
        producer2.close();