src/vs/editor/browser/controller/mouseTarget.ts/HitTestRequest/fulfillViewZone
class HitTestRequest:	public fulfillViewZone(type: MouseTargetType.GUTTER_VIEW_ZONE | MouseTargetType.CONTENT_VIEW_ZONE, position: Position, detail: IMouseTargetViewZoneData): IMouseTargetViewZone {
		return MouseTarget.createViewZone(type, this.target, this._getMouseColumn(position), position, detail);
	}