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