Enumeration Members
CANCELLATION
CANCELLATION: "onNavigationCancellation"
DESTINATION_REACHED
DESTINATION_REACHED: "onNavigationDestinationReached"
ERROR
ERROR: "onNavigationError"
FINISHED
FINISHED: "onNavigationFinished"
OUTSIDE_ROUTE
OUTSIDE_ROUTE: "onUserOutsideRoute"
PROGRESS
PROGRESS: "onNavigationProgress"
START
START: "onNavigationStart"