unitSystem
UnitSystem to be used within NavigationController.
Propagated to other components (e.g. GuidanceEngine) with NavigationSnapshot.
UnitSystemType.Dynamic is resolved based on current location country:
for "USA" and "PRI" - UnitSystem.US
for "GBR" - UnitSystem.UK
for other countries - UnitSystem.METRIC
Important: This is a Public Preview API. It may be changed or removed at any time.