Easy table of content feature with go to links and page numbers

[SuperPat45]

Is your feature request related to a problem? Please describe.
I need to generate a PDF containing a table of content with go to links and page numbers at the beginning of the document.

Describe the solution you'd like
It would be amazing to have a way to insert a page number of a bookmark that was not currently known. Maybe something like this could be done to fill the table of content with page number:

final Paragraph par = new Paragraph();
final Chunk c = new Chunk(chapTitle));
c.setLocalGoto(bookmark);
par.add(c);
par.add(new Chunk(new DottedLineSeparator()));
par.add(new Chunk(new BookmarkPageNumber(bookmark));
summaryChapter.add(par);

I imagine a class BookmarkPageNumber taking a bookmark name as parameter and will write the page number when the document is closed.

Describe alternatives you've considered
The only way I found is to insert the table of content at the end of the book.

Your real name
no

Additional context