Get all defined ClassificationTypeDefinitions?

So I just tried creating a new classification type,

    [Export(typeof(ClassificationTypeDefinition))]
    [Name("String")]
    internal static ClassificationTypeDefinition _stringClassType;

But then I got a duplicate ClassificationTypeDefinition error telling me that "String" has already been defined. I didn't define it anywhere else. Soo开发者_JAVA百科n as I renamed it to "String2" it went away. I'm guessing these are already defined by VS... can I get a list of the predefined ones so I know which to avoid (or which ones I can use)?

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Oops.... guess that wasn't too hard to find after all.

MSDN: PredefinedClassificationTypeNames Class