@class NSObject; @protocol OS_dispatch_semaphore; @interface WFNSProcessInfoBackgroundAssertion : WFBackgroundAssertion @property (retain, nonatomic) NSObject<OS_dispatch_semaphore> *semaphore; + (id)backgroundAssertionWithName:(id)a0 expirationHandler:(id /* block */)a1; - (void)end; - (void).cxx_destruct; - (id)initWithName:(id)a0 expirationHandler:(id /* block */)a1; @end