@class NSProgress; @interface _HDMirroredProgress : NSProgress { NSProgress *_originalProgress; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; } - (void)dealloc; - (void)observeValueForKeyPath:(id)a0 ofObject:(id)a1 change:(id)a2 context:(void *)a3; - (void).cxx_destruct; @end