Headings are used as the titles of each major section of he checkout. Unlike HTML headings, you do not explicitly specify the position of the heading in the document outline. Instead, use headings nested in heading groups to create a document structure that accessibility technologies can use to speed up navigation.
optional = ?
||Unique identifier. Typically used to make the heading a target that another component can refer to in order to provide an alternative accessibility label.|
||The visual level of the heading. When not provided, the heading will use its “automatic” heading level, which is determined by the level of nesting within ancestor
||A custom accessibility role for this heading. Currently, only