@class NSSet, MSOID; @interface MSCMSSMIMECapabilitiesAttribute : NSObject <MSCMSAttributeCoder> @property (readonly) NSSet *capabilities; @property (readonly, retain) MSOID *attributeType; - (id)initWithCapabilities:(id)a0; - (id)init; - (void).cxx_destruct; - (id)initWithAttribute:(id)a0 error:(id *)a1; - (id)copyAttributeData:(id *)a0; - (id)encodeAttributeWithError:(id *)a0; @end