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