void produceSpans(byte[] spans, String queue) throws Exception {
    Channel channel = null;
    try {
      channel = connection.createChannel();
      channel.basicPublish("", queue, null, spans);
    } finally {
      if (channel != null) channel.close();
    }
  }
The {@code toString()} of {@link Component} implementations appear in health check endpoints.
Since these are likely to be exposed in logs and other monitoring tools, care should be taken
to ensure {@code toString()} output is a reasonable length and does not contain sensitive
information.
zipkin-collector/rabbitmq/src/test/java/zipkin2/collector/rabbitmq/ITRabbitMQCollector.java