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