/// <summary>
/// Configures a publisher for a pre-existing topic.
/// </summary>
/// <param name="topicArn">The ARN of the topic to publish to.</param>
/// <param name="configure">An optional delegate to configure a topic publisher.</param>
/// <typeparam name="T">The type of the message to publish to.</typeparam>
/// <returns>The current <see cref="PublicationsBuilder"/>.</returns>
/// <exception cref="ArgumentNullException"></exception>
public PublicationsBuilder WithTopicArn <T>(string topicArn, Action <TopicAddressPublicationBuilder <T> > configure = null)
where T : Message
{
if (topicArn == null)
{
throw new ArgumentNullException(nameof(topicArn));
}
var builder = new TopicAddressPublicationBuilder <T>(TopicAddress.FromArn(topicArn));
configure?.Invoke(builder);
Publications.Add(builder);
return(this);
}
