Template:Stringlist:AppendSignedClientCertificate syntax
[%rc =] sl:AppendSignedClientCertificate( [PrivateKey=] string, - [Request=] string, - [Signer=] string, - [[StartDate=] string], - [[EndDate=] string], - [[SerialNumber=] number], - [SignatureAlgorithm= digestAlgorithm])