**Expectation**: ```html <ol role="tree"></ol> ``` should generate no errors. **Actual**: It generates the following error: > [aria-required-children](https://dequeuniversity.com/rules/axe/3.1/aria-required-children?application=axeAPI): Certain ARIA roles must contain particular children [WCAG 1.3.1](https://www.w3.org/WAI/WCAG21/Understanding/info-and-relationships) **Motivation**: A tree that has no leaves is still a tree, and therefore `role="treeitem"` should not be a required child of an element of `role="tree"`. **axe-core version**: 3.0.0-alpha1, 3.1.1
Expectation:
should generate no errors.
Actual: It generates the following error:
Motivation: A tree that has no leaves is still a tree, and therefore
role="treeitem"should not be a required child of an element ofrole="tree".axe-core version: 3.0.0-alpha1, 3.1.1