ContactContext.Events.NewContactMessage.NewContactMessage C# (CSharp) Метод

        public NewContactMessage(
            string clientName, 
            MailAddress clientEmalAddress, 
            string messageTopic,
            string messageBody)
        {
            Require.NotEmpty(clientName, nameof(clientName));
            Require.NotNull(clientEmalAddress, nameof(clientEmalAddress));
            Require.NotEmpty(messageTopic, nameof(messageTopic));
            Require.NotNull(messageBody, nameof(messageBody));

            ClientName = clientName;
            ClientEmalAddress = clientEmalAddress;
            MessageTopic = messageTopic;
            MessageBody = messageBody;
        }