readAttributeOffTransitionTime(completionHandler:)
Declaration
func readAttributeOffTransitionTime(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeOffTransitionTime() async throws -> NSNumberfunc readAttributeOffTransitionTime(completionHandler: @escaping @Sendable (NSNumber?, (any Error)?) -> Void)func readAttributeOffTransitionTime() async throws -> NSNumber