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

Microsoft.Identity.Client.Internal.ClientCredential.ClientAssertionDelegateCredential

Handles client assertions supplied via a delegate that returns a ClientSignedAssertion (JWT + optional certificate bound for mTLS-PoP).
namespace Microsoft.Identity.Client.Internal.ClientCredential { internal sealed class ClientAssertionDelegateCredential : IClientCredential, IClientSignedAssertionProvider { public AssertionType AssertionType { get; } public Task<CredentialMaterial> GetCredentialMaterialAsync(CredentialContext context, CancellationToken cancellationToken); } }