@class _TtC21DocumentUnderstanding20DURequestContentType; @interface DocumentUnderstanding.DURequestContentType : NSObject <NSCopying> @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *languageTag; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *wikiDataTopic; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *date; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *address; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *link; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *phoneNumber; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *navigationTitle; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *userInterfaceUnderstanding; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *category; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *poem; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *posTags; @property (class, nonatomic, readonly) _TtC21DocumentUnderstanding20DURequestContentType *foundInEvent; @property (nonatomic) void /* unknown type, empty encoding */ rawValue; @property (nonatomic, readonly) BOOL isEmpty; @property (nonatomic, readonly) long long hash; - (id)init; - (BOOL)isEqual:(id)a0; - (id)copyWithZone:(void *)a0; - (id)initWithRawValue:(long long)a0; - (void)formIntersection:(id)a0; - (void)formSymmetricDifference:(id)a0; - (void)formUnion:(id)a0; - (id)initWithAbilitiesToUnion:(id)a0; @end