@class NSDictionary, SBSwitcherLayoutCalculationsCacheValidityToken; @protocol SBSwitcherLayoutCalculationsCacheDelegate; @interface SBSwitcherLayoutCalculationsCache : NSObject { NSDictionary *_cachedLayoutCalculationsByKey; } @property (weak, nonatomic) id<SBSwitcherLayoutCalculationsCacheDelegate> delegate; @property (readonly, nonatomic) SBSwitcherLayoutCalculationsCacheValidityToken *validityToken; - (id)init; - (void).cxx_destruct; - (struct CGRect { struct CGPoint { double x0; double x1; } x0; struct CGSize { double x0; double x1; } x1; })frameForKey:(id)a0 validityToken:(id)a1 fallback:(id /* block */)a2; - (void)rebuildIfNecessaryForValidityToken:(id)a0; - (double)scaleForKey:(id)a0 validityToken:(id)a1 fallback:(id /* block */)a2; @end