planner.cs

var builder = Kernel.CreateBuilder();
builder.Plugins.AddFromType<MathPlugin>();
builder.AddAzureOpenAIChatCompletion("<deployment name>", "<endpoint>", "<key>");

var kernel = builder.Build();

#pragma warning disable // Suppress the diagnostic messages

var planner = new HandlebarsPlanner(new HandlebarsPlannerOptions() { AllowLoops = true });
var plan = await planner.CreatePlanAsync(kernel, $"Get the result of subtracting 10 from the sum of factorials {numberOne} and {numberTwo}");
var planResult = await plan.InvokeAsync(kernel, new KernelArguments());

Console.WriteLine(planResult);