Sender REST-Adapter: Configure SSL and client certificate authentication

Hi experts,

we would like to offer REST-Interfaces with SSL encryption and client certificates as authentication method via SAP PO.

I have read SAP note 2032220 - New Feature : REST Adapter for Advanced Adapter Engine.

It says that the adapter offers features for:

• Basic and client certification based authentication
• SSL over http

I can't find any of these settings in sender REST Apapter. 

Could you please guide me.

Thanks in advance.

Regards,

Andreas