<PackageReference Include="Microsoft.Identity.Client" Version="4.84.0" />

Microsoft.Identity.Client.Internal.ClientCredential.ClientAssertionStringDelegateCredential

Client assertion provided as a string JWT via a delegate. Cannot return a TokenBindingCertificate and therefore is incompatible with mTLS.
namespace Microsoft.Identity.Client.Internal.ClientCredential { internal sealed class ClientAssertionStringDelegateCredential : IClientCredential { public AssertionType AssertionType { get; } public Task<CredentialMaterial> GetCredentialMaterialAsync(CredentialContext context, CancellationToken cancellationToken); } }