@Deprecated
  @ApiStatus.ScheduledForRemoval
  public static @NotNull <T, U extends T> U findExtension(@NotNull ExtensionPointName<T> extensionPointName, @NotNull Class<U> extClass) {
    return extensionPointName.findExtensionOrFail(extClass);
  }
@Deprecated
  @ApiStatus.ScheduledForRemoval
  public static @NotNull <T, U extends T> U findExtension(@NotNull ExtensionPointName<T> extensionPointName, @NotNull Class<U> extClass)