A document outline (bookmark) entry — a label, a zero-based destination page,
and nested children (mirror of model::OutlineNode). Populated by
GigaPdfEngine.officeToModel/reconstruction from the source's own bookmarks
(PDF /Outlines) or, lacking those, from detected headings.
A document outline (bookmark) entry — a label, a zero-based destination page, and nested children (mirror of
model::OutlineNode). Populated by GigaPdfEngine.officeToModel/reconstruction from the source's own bookmarks (PDF/Outlines) or, lacking those, from detected headings.