All "li" elements accept the button should be presentational.
- apples
- bananas
- cantalope
- dates
Nested list inside a presentational list should not be presentational
- This item should not expose an AXGroup;
- this one should not either.
- However, because the nested UL and LI do not have explicit role of presentation,
- this list item should expose an AXGroup,
- and this one should, too.
- but this one is static text again.