using System; namespace MQTTnet.Server { public class MqttClientUnsubscribedTopicEventArgs : EventArgs { public MqttClientUnsubscribedTopicEventArgs(string clientId, string topicFilter) { ClientId = clientId ?? throw new ArgumentNullException(nameof(clientId)); TopicFilter = topicFilter ?? throw new ArgumentNullException(nameof(topicFilter)); } public string ClientId { get; } public string TopicFilter { get; } } }