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See moreNavigationMapViewis a subclass ofMGLMapViewwith convenience functions for addingRoutelines to a map.Declaration
Swift
open class NavigationMapView: MGLMapView 
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An extension on
See moreMGLMapViewthat allows for toggling traffic on a map style that contains a Mapbox Traffic source.Declaration
Swift
class MGLMapView : UIView 
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        Maps  Reference