anchor.diff:          return result;
       }
   
  +    /// Execute each of the listeners in order with the supplied arguments.
  +    ///
  +    /// Returns true if event had listeners, false otherwise.
       bool emit(event, [List params = const []]) {
           var eventType = event is EventInterface ? event.runtimeType : event;
           bool handlersFound = false;
  
positive.code: library event_emitter;
  
  part 'src/interface/event_interface.dart';
  
negative.code:         }
      }
  
      /// Return the number of listeners for a given event.
      static int listenerCount(EventEmitter emitter, event) {
          return emitter.listeners(event).length;
      }
  