Dart APIunself_monitoringAnalyticServicetrackScreen trackScreen method Null safety void trackScreen(String screenName ) Implementation void trackScreen(String screenName) => _rudder.screen(screenName); unself_monitoring unself_monitoring AnalyticService trackScreen method AnalyticService class Constructors AnalyticService Properties context hashCode runtimeType Methods getCurrentContext noSuchMethod toString trackEvent trackScreen Operators operator ==