I'm adding some content types to every standard-document library which is created over the "List Added"-EventReceiver. When a web is created the are some new doclibs for example in a team site there is are "shared documents" and "Site Assets".
My problem is that I only want to add the content types to the standard doclibs like "shared documents" in my example above but not in "Site Assets". How can I determine if a doclib is a standard doclib and not a sharepoint-specific doclib?