@ApiStatus.Experimental
  public static @NotNull MarkdownList createList(
    @NotNull Project project,
    @NotNull Iterable<@NotNull String> items,
    @NotNull Function<? super Integer, String> markerSupplier
  ) {
    final var builder = new StringBuilder();
    var itemIndex = 0;
    for (final var item: items) {
      builder.append(markerSupplier.apply(itemIndex));
      builder.append(" ");
      builder.append(item);
      builder.append("\n");
      itemIndex += 1;
    }
    final var file = createFile(project, builder.toString());
    final var list = Objects.requireNonNull(file.getFirstChild());
    assert(list instanceof MarkdownList);
    return (MarkdownList)list;
  }
@ApiStatus.Experimental
  public static @NotNull MarkdownList createList(
    @NotNull Project project,
    @NotNull Iterable<@NotNull String> items,
    @NotNull Function<? super Integer, String> markerSupplier
  )