SubNavigationResultMessage.cs

public class SubNavigationResultMessage<TResult> : TinyMessageBase
{
    public TResult Result { get; private set; }
    public string MessageId { get; set; }

    public SubNavigationResultMessage(object sender, string messageId, TResult result)
        : base(sender)
    {
        Result = result;
        MessageId = messageId;
    }
}