<PackageReference Include="System.ServiceModel.Primitives" Version="8.1.2" />

System.IdentityModel.Selectors.SecurityTokenManager

public abstract class SecurityTokenManager
protected SecurityTokenManager()

public abstract SecurityTokenAuthenticator CreateSecurityTokenAuthenticator(SecurityTokenRequirement tokenRequirement, out SecurityTokenResolver outOfBandTokenResolver)

public abstract SecurityTokenProvider CreateSecurityTokenProvider(SecurityTokenRequirement tokenRequirement)

public abstract SecurityTokenSerializer CreateSecurityTokenSerializer(SecurityTokenVersion version)