@class NSMapTable; @interface _MFMessageURLProtocolRegistry : NSObject { struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; } @property (readonly, nonatomic) NSMapTable *storage; + (id)sharedRegistry; - (id)init; - (void).cxx_destruct; - (id)contentRepresentationForURL:(id)a0; - (void)registerContentRepresentation:(id)a0; @end