private static @Nullable ItemPresentation getSimpleNestedPresentation(@NotNull MarkdownList element) {
    final var parent = element.getParent();
    if (MarkdownPsiStructureUtil.isSimpleNestedList(parent.getChildren()) && parent instanceof MarkdownListItem) {
      return ((MarkdownListItem)parent).getPresentation();
    }
    return null;
  }
private static @Nullable ItemPresentation getSimpleNestedPresentation(@NotNull MarkdownList element)