anchor.diff:      this.metaKey,
       this.repeat,
       this.shiftKey,
  -  )
  -      : super(bubbles, cancelable, currentTarget, defaultPrevented, preventDefault, stopPropagation, eventPhase,
  -            isTrusted, nativeEvent, target, timeStamp, type) {}
  +  ) /* Prevent formatting differences between Dart 1 and Dart 2 */ : super(
  +          bubbles,
  +          cancelable,
  +          currentTarget,
  +          defaultPrevented,
  +          preventDefault,
  +          stopPropagation,
  +          eventPhase,
  +          isTrusted,
  +          nativeEvent,
  +          target,
  +          timeStamp,
  +          type,
  +        ) {}
   }
   
   class SyntheticFocusEvent extends SyntheticEvent {
  
positive.code:     this.twist,
      this.pointerType,
      this.isPrimary,
    )
        : super(bubbles, cancelable, currentTarget, defaultPrevented, preventDefault, stopPropagation, eventPhase,
              isTrusted, nativeEvent, target, timeStamp, type) {}
  }
  
  class SyntheticTouchEvent extends SyntheticEvent {
  
negative.code:     this.screenX,
      this.screenY,
      this.shiftKey,
    ) /* Prevent formatting differences between Dart 1 and Dart 2 */ : super(
            bubbles,
            cancelable,
            currentTarget,
            defaultPrevented,
            preventDefault,
            stopPropagation,
            eventPhase,
            isTrusted,
            nativeEvent,
            target,
            timeStamp,
            type,
          ) {}
  }
  
  class SyntheticPointerEvent extends SyntheticEvent {
  