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