System/Library/AccessibilityBundles/AppInstallExtension.axbundle

StackViewAccessibility.h

NSObject
>
UIAccessibilitySafeCategory
>
__StackViewAccessibility_super

@interface StackViewAccessibility : __StackViewAccessibility_super

+ (Class)safeCategoryBaseClass;
+ (void)_accessibilityPerformValidations:(id)a0;
+ (id)safeCategoryTargetClassName;

- (id)accessibilityLabel;

@end