public static IApiClientOperation <TResult> OnSuccess <TResult>(this IApiClientOperation <TResult> operation, Action <TResult> action)
 {
     operation.ConfigureSuccess(action);
     return(operation);
 }
 public static IApiClientOperation OnSuccess(this IApiClientOperation operation, Action <HttpStatusCode> action)
 {
     operation.ConfigureSuccess(action);
     return(operation);
 }