@Deprecated
  @ApiStatus.ScheduledForRemoval
  public static @NotNull ExtensionsArea getArea(@Nullable("null means root") AreaInstance areaInstance) {
    return areaInstance == null ? rootArea : areaInstance.getExtensionArea();
  }
@Deprecated
  @ApiStatus.ScheduledForRemoval
  public static @NotNull ExtensionsArea getArea(@Nullable("null means root") AreaInstance areaInstance)