code: function oldConfigNames(config) {
    const configuration = Object.assign({}, config);
    if (configuration.amqpUrl) {
      configuration.host = configuration.amqpUrl;
    }
  
    if (configuration.amqpPrefetch) {
      configuration.prefetch = configuration.amqpPrefetch;
    }
  
    if (configuration.amqpRequeue) {
      configuration.requeue = configuration.amqpRequeue;
    }
  
    if (configuration.amqpTimeout) {
      configuration.timeout = configuration.amqpTimeout;
    }
    return configuration;
  }
docs: deprecated configuration property names