Owin.Builder.AppBuilder.ToGeneratorMiddlewareFactory C# (CSharp) Method

        private static Tuple<Type, Delegate, object[]> ToGeneratorMiddlewareFactory(object middlewareObject, object[] args)
        {
            MethodInfo[] methods = middlewareObject.GetType().GetMethods();
            foreach (MethodInfo method in methods)
            {
                if (method.Name != Constants.Invoke)
                {
                    continue;
                }
                ParameterInfo[] parameters = method.GetParameters();
                Type[] parameterTypes = parameters.Select(p => p.ParameterType).ToArray();

                if (parameterTypes.Length != args.Length + 1)
                {
                    continue;
                }
                if (!parameterTypes
                    .Skip(1)
                    .Zip(args, TestArgForParameter)
                    .All(x => x))
                {
                    continue;
                }
                IEnumerable<Type> genericFuncTypes = parameterTypes.Concat(new[] { method.ReturnType });
                Type funcType = Expression.GetFuncType(genericFuncTypes.ToArray());
                Delegate middlewareDelegate = Delegate.CreateDelegate(funcType, middlewareObject, method);
                return Tuple.Create(parameters[0].ParameterType, middlewareDelegate, args);
            }
            return null;
        }