@class FBSDisplayLayoutMonitor, NSArray, NSString; @interface SMUSystemDisplayLayoutMonitor : NSObject <SMUSystemDisplayLayoutMonitoring> @property (readonly, nonatomic) FBSDisplayLayoutMonitor *layoutMonitor; @property (readonly, nonatomic) NSArray *currentLayout; @property (copy, nonatomic) id /* block */ transitionHandler; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)externalDisplayLayoutMonitorWithIdentity:(id)a0; + (id)mainDisplayLayoutMonitor; - (id)init; - (void)dealloc; - (id)initWithConfiguration:(id)a0; - (void).cxx_destruct; - (void)handleUpdatedLayout:(id)a0 transitionContext:(id)a1; @end