This will contain AD as a Service. We will need to change the this to contain generic Directory Service in the future when we support modeling any Messaging service
<ClassType ID="Microsoft.SystemCenter.ServiceDesigner.Messaging.DirectoryServices" Comment="This will contain AD as a Service. We will need to change the this to contain generic Directory Service in the future when we support modeling any Messaging service" Accessibility="Public" Abstract="true" Base="Microsoft.SystemCenter.ServiceDesigner.ServiceComponentGroup" Hosted="false" Singleton="false"/>