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