System/Library/PrivateFrameworks/ActivityRingsUI.framework

ARUIRingsCountdownState.h

NSObject
>
ARUIRingsRenderState

@interface ARUIRingsCountdownState : ARUIRingsRenderState

- (id)name;
- (id)renderPipelineDescriptorFromLibrary:(id)a0;
- (BOOL)shouldRunStateForRing:(id)a0;

@end