deviceId property Null safety
The identifier that is generated for the device during registration.
It is a String that is used in the backend to associate FIDO UAF credentials
with a device.
This property gives back an empty String by default, because its value is
not required when DeviceInformation is provided during registration.
The DeviceInformation returned LocalData.deviceInformation contains a
valid device identifier.
The device ID is stored in nevisIDM in the fidouaf_device_id attribute
of the generic credentials containing the dispatch target information.
Returns: the device identifier or an empty String.
Implementation
String get deviceId;