Command

    public interface ICommand<in TRequest, out TResponse> : IDisposable
    {
        TResponse Execute(TRequest request);
    }

    /// <summary>
    /// Use Request.Empty when the command doesn't need any arguments.
    /// </summary>
    public class Request
    {
        public static readonly Request Empty = new Request();

        private Request()
        {
            
        }
    }

    /// <summary>
    /// Use Response.Empty when the command doesn't return any meaningful results.
    /// </summary>
    public class Response
    {
        public static readonly Response Empty = new Response();

        private Response()
        {
            
        }
    }