@class NSString, BKSProcessAssertion; @interface WFBKSBackgroundAssertion : WFBackgroundAssertion @property (readonly, copy, nonatomic) NSString *taskName; @property (copy, nonatomic) id /* block */ expirationHandler; @property (retain, nonatomic) BKSProcessAssertion *assertion; @property (retain, nonatomic) id observer; + (id)backgroundAssertionWithName:(id)a0 expirationHandler:(id /* block */)a1; - (void)end; - (void).cxx_destruct; - (id)initWithName:(id)a0 expirationHandler:(id /* block */)a1; @end