@class NSString, IOGPUMetalDevice; @protocol MTLDevice; @interface _IOGPUMetalMTLEvent : IOGPUMTLEvent <MTLEvent> { unsigned long long _labelTraceID; NSString *_label; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _labelLock; } @property (readonly) IOGPUMetalDevice<MTLDevice> *device; @property (copy) NSString *label; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (void)dealloc; - (id)label; - (void)setLabel:(id)a0; - (id)initWithDevice:(id)a0; - (id)initWithDevice:(id)a0 options:(unsigned long long)a1; - (id)retainedLabel; @end