@Deprecated
	void setBatteryLevelNotificationCallback() {
		if (batteryLevelNotificationCallback == null) {
			batteryLevelNotificationCallback = new ValueChangedCallback(this)
					.with((device, data) -> {
						if (data.size() == 1) {
							//noinspection DataFlowIssue
							final int batteryLevel = data.getIntValue(Data.FORMAT_UINT8, 0);
							batteryValue = batteryLevel;
							onBatteryValueReceived(bluetoothGatt, batteryLevel);
							postCallback(c -> c.onBatteryValueReceived(device, batteryLevel));
						}
					});
		}
	}
Sets the connection priority callback.
@param callback the callback
ble/src/main/java/no/nordicsemi/android/ble/BleManagerHandler.java