LocalClientCertificateSelector
getset
public Func<object, string, X509CertificateCollection, X509Certificate, string[], X509Certificate2> LocalClientCertificateSelectorA callback that will be invoked to dynamically select a local client certificate. This is higher priority than LocalCertificate.
If the certificate has an Extended Key Usage extension, the usages must include Client Authentication (OID 1.3.6.1.5.5.7.3.2).
