unitSystem
UnitSystem currently used within TomTomNavigation.
It is propagated to other components (e.g. GuidanceEngine) and is used for the generation of guidance announcements.
UnitSystemType.Dynamic is resolved based on current location country:
for "USA" and "PRI" it will resolve to UnitSystem.US
for "GBR" it will resolve to UnitSystem.UK
for other countries it will resolve to UnitSystem.Metric
Throws
if the instance of MutableNavigationConfiguration is closed.