NotSupportedException: JsonTypeInfo metadata for type 'System.Func`2[Microsoft.Extensions.Options.IOptions`1[filelistclient.FileLocationOptions],System.String]' was not provided by TypeInfoResolver of type '[filelistclient.UnneededAddedComplexityJsonContext]'. If using source generation, ensure that all root types passed to the serializer have been annotated with 'JsonSerializableAttribute', along with any types that might be serialized polymorphically.

System.Text.Json.ThrowHelper.ThrowNotSupportedException_NoMetadataForType(Type type, IJsonTypeInfoResolver resolver)

NotSupportedException: JsonTypeInfo metadata for type 'System.Func`2[Microsoft.Extensions.Options.IOptions`1[filelistclient.FileLocationOptions],System.String]' was not provided by TypeInfoResolver of type '[filelistclient.UnneededAddedComplexityJsonContext]'. If using source generation, ensure that all root types passed to the serializer have been annotated with 'JsonSerializableAttribute', along with any types that might be serialized polymorphically.

System.Text.Json.ThrowHelper.ThrowNotSupportedException_NoMetadataForType(Type type, IJsonTypeInfoResolver resolver)

    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateSlimBuilder(args);

            builder.Services.ConfigureHttpJsonOptions(options =>
                options.SerializerOptions.TypeInfoResolverChain.Insert(0, UnneededAddedComplexityJsonContext.Default));
            builder.Services.AddOptions<FileLocationOptions>().BindConfiguration("FileLocation");
            var app = builder.Build();


            var testApi = app.MapGroup("/options");
            testApi.MapGet("/", () => GetOptions);
            app.Run();
        }

        private static string GetOptions(IOptions<FileLocationOptions> options)
        {
            return $"{options.Value.PathToScan}, {options.Value.SaveScanToPath}";
        }
    }

    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateSlimBuilder(args);

            builder.Services.ConfigureHttpJsonOptions(options =>
                options.SerializerOptions.TypeInfoResolverChain.Insert(0, UnneededAddedComplexityJsonContext.Default));
            builder.Services.AddOptions<FileLocationOptions>().BindConfiguration("FileLocation");
            var app = builder.Build();


            var testApi = app.MapGroup("/options");
            testApi.MapGet("/", () => GetOptions);
            app.Run();
        }

        private static string GetOptions(IOptions<FileLocationOptions> options)
        {
            return $"{options.Value.PathToScan}, {options.Value.SaveScanToPath}";
        }
    }

namespace filelistclient
{
    [JsonSourceGenerationOptions(WriteIndented = true)]
    [JsonSerializable(typeof(FileLocationOptions))]
    [JsonSerializable(typeof(IOptions<FileLocationOptions>))]
    internal partial class UnneededAddedComplexityJsonContext : JsonSerializerContext
    {
    }
}

namespace filelistclient
{
    [JsonSourceGenerationOptions(WriteIndented = true)]
    [JsonSerializable(typeof(FileLocationOptions))]
    [JsonSerializable(typeof(IOptions<FileLocationOptions>))]
    internal partial class UnneededAddedComplexityJsonContext : JsonSerializerContext
    {
    }
}

using Microsoft.AspNetCore.Mvc;

namespace TestWebApp
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateBuilder(args);

            // Add services to the container.
            builder.Services.AddAuthorization();

            builder.Logging.ClearProviders();
            builder.Logging.AddConsole();
            builder.Logging.SetMinimumLevel(LogLevel.Trace);
            var app = builder.Build();

            // Configure the HTTP request pipeline.

            app.UseAuthorization();

            var summaries = new[]
            {
            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
        };

            app.MapGet("/weatherforecast", (HttpContext httpContext, [FromServices] ILogger<Program> logger) =>
            {
                logger.LogTrace("Trace event from /weatherforecast");
                Console.WriteLine($"ILogger enabled for trace? {logger.IsEnabled(LogLevel.Trace)}");
                var forecast = Enumerable.Range(1, 5).Select(index =>
                    new WeatherForecast
                    {
                        Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
                        TemperatureC = Random.Shared.Next(-20, 55),
                        Summary = summaries[Random.Shared.Next(summaries.Length)]
                    })
                    .ToArray();
                return forecast;
            });

            app.Run();
        }
    }
}

using Microsoft.AspNetCore.Mvc;

namespace TestWebApp
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateBuilder(args);

            // Add services to the container.
            builder.Services.AddAuthorization();

            builder.Logging.ClearProviders();
            builder.Logging.AddConsole();
            builder.Logging.SetMinimumLevel(LogLevel.Trace);
            var app = builder.Build();

            // Configure the HTTP request pipeline.

            app.UseAuthorization();

            var summaries = new[]
            {
            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
        };

            app.MapGet("/weatherforecast", (HttpContext httpContext, [FromServices] ILogger<Program> logger) =>
            {
                logger.LogTrace("Trace event from /weatherforecast");
                Console.WriteLine($"ILogger enabled for trace? {logger.IsEnabled(LogLevel.Trace)}");
                var forecast = Enumerable.Range(1, 5).Select(index =>
                    new WeatherForecast
                    {
                        Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
                        TemperatureC = Random.Shared.Next(-20, 55),
                        Summary = summaries[Random.Shared.Next(summaries.Length)]
                    })
                    .ToArray();
                return forecast;
            });

            app.Run();
        }
    }
}