         )
     }
     
-    func _testNotification() async throws {
+    func testNotification() async throws {
         
         // service
         let batteryLevel = GATTBatteryLevel(level: .max)

            GATTAttribute.Characteristic(
                uuid: type(of: batteryLevel).uuid,
                value: batteryLevel.data,
                permissions: [.read, .write],
                properties: [.read, .write],
                descriptors: []
            )
        ]
        

                    foundCharacteristics.count == 1
                    else { XCTFail(); return }
                XCTAssertEqual(foundCharacteristic.uuid, .batteryLevel)
                XCTAssertEqual(foundCharacteristic.properties, [.read, .notify])
                // wait for notifications
                let stream = central.notify(for: foundCharacteristic)
                for try await notification in stream {
