Exported Hooks

[giabertu]

Hi!

I was just browsing through the source code and looking at the package exports:

export {
  pdfjs,
  Document,
  Outline,
  Page,
  Thumbnail,
  useDocumentContext,
  useOutlineContext,
  usePageContext,
};

I can't seem to find an explanation the last three hooks on the readme. How could one leverage them?
I am particularly interested in useDocumentContext, as I had document context issues in Safari!

Thank you in advance:)