<PackageReference Include="Microsoft.Identity.Client" Version="4.83.3" />

Microsoft.Identity.Client.ManagedIdentity.V2.CertificateRequest

Downlevel polyfill for System.Security.Cryptography.X509Certificates.CertificateRequest that provides OtherRequestAttributes support for frameworks prior to .NET 7.0. This file is conditionally included only for net462, net472, and netstandard2.0. For .NET 8.0+, the built-in CertificateRequest class is used instead.
namespace Microsoft.Identity.Client.ManagedIdentity.V2 { internal class CertificateRequest { } }