@class NSString; @protocol PXAudioAsset; @interface PXStoryNullSongResource : NSObject <PXStorySongResource> @property (readonly, nonatomic) id<PXAudioAsset> px_storyResourceSongAsset; @property (readonly, nonatomic) NSString *px_storyResourceIdentifier; @property (readonly, nonatomic) long long px_storyResourceKind; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; @end