public static void CreateDelegate(this NancyModule mod, BaseIntegrateModel model)
        {
            GenericMethodInfo = BindMethodInfo.MakeGenericMethod(model.DerivedType);

            Expression<Func<NancyModule, BaseIntegrateModel, object>> func = (o, m) =>
            Convert.ChangeType(GenericMethodInfo.Invoke(BindMethodInfo.DeclaringType, new object[] { o }), m.DerivedType);

            _bindingMappings.Add(model.DerivedType, func.Compile());

        }
        public static dynamic BindModel(this NancyModule mod, BaseIntegrateModel model)
        {
            return _bindingMappings[model.DerivedType](mod, model);

        }