DeviceUserAbstractBehaviour is the abstract class for all device users, e.g. trackers.
A DeviceUserAbstractBehaviour should Bind to a DeviceAbstractBehaviour to make everything work. This will be automatically done by the ARBuilder if you put a DeviceUserAbstractBehaviour in the scene before everything start. If you add the component later in the scene, make sure to Bind it to a DeviceAbstractBehaviour, for example, Bind to a CameraDeviceBaseBehaviour.
void Bind(DeviceAbstractBehaviour behaviour)
Bind a device. A device user can only work when a valid device is bound.
The work start event, e.g tracker start to run.
The work stop event.