addList method
Adds an HTML items
list to the summary buffer.
Implementation
void addList(Iterable<String> items, {bool ordered = false}) {
final listItems =
items.map((item) => _wrap(tag: 'li', content: item)).join('');
addRaw(_wrap(tag: ordered ? 'ol' : 'ul', content: listItems), addEOL: true);
}