I'm preparing the migration of some of my code from 1.0.4 to 1.0.5 and found that the behaviour of AdvertisedDevice::getServiceDataUUID() has now changed.

I don't know if this is actually a bug, but this new behaviour could lead to some confusion for beginners,
since function calls like this should not throw an exception my opinion. So I'm opening this issue.

In 1.0.4 a call to AdvertisedDevice::getServiceDataUUID() would return the advertised devices member m_serviceDataUUID. If the device did not advertise any service, this would be a BLEUUID created with the default constructor.

As of 1.0.5-rc3, this call returns the first element of the vector m_serviceUUIDs. This vector contains no entries if no UUIDs were advertised, which means that m_serviceUUIDs[0] might throw an exception.

There also seems to be no function for getting the count of advertised UUIDs. This is an issue, because there is no way to determine beforehand whether AdvertisedDevice::getServiceDataUUID() or BLEAdvertisedDevice::getServiceDataUUID(int i) will cause an exception.