Every coordinate under the flake that bears a focus boost (qest §5.7.4), gathered in
document order by descending through transform stages and nested property branches. A focus boost ranks its
matching resources ahead of the regular sort order, independently of the sort
precedence, so these coordinates form a distinct key set from the ordering ones.
Collects the focus keys of a Flake.
Every coordinate under the flake that bears a focus boost (qest §5.7.4), gathered in document order by descending through transform stages and nested property branches. A focus boost ranks its matching resources ahead of the regular sort order, independently of the sort precedence, so these coordinates form a distinct key set from the ordering ones.