<PackageReference Include="NUnit" Version="4.3.0" />

Result

static class Result
using System.Runtime.CompilerServices; namespace NUnit.Framework { [System.Runtime.CompilerServices.NullableContext(1)] [System.Runtime.CompilerServices.Nullable(0)] internal static class Result { [return: System.Runtime.CompilerServices.Nullable(new byte[] { 0, 1 })] public static Result<T> Success<[System.Runtime.CompilerServices.Nullable(2)] T>(T value) { return Result<T>.Success(value); } [return: System.Runtime.CompilerServices.Nullable(new byte[] { 0, 1 })] public static Result<T> Error<[System.Runtime.CompilerServices.Nullable(2)] T>(string message) { return Result<T>.Error(message); } } }