<PackageReference Include="Microsoft.Extensions.ObjectPool" Version="11.0.0-preview.2.26159.112" />

Microsoft.AspNetCore.Shared.ArgumentNullThrowHelper

namespace Microsoft.AspNetCore.Shared { internal static class ArgumentNullThrowHelper { public static void ThrowIfNull(object argument, string paramName = null); public static void ThrowIfNullOrEmpty(string argument, string paramName = null); } }