PdfStructureTreeRoot update - fixing Page linking

[luzhanov]

Description of the new Feature/Bugfix

A follow-up / bugfix for PR #1127

• For cases when existing object is being added to /NUMS array via PdfStructureTreeRoot.addExistingObject, we need to save correct array entry into Page's /STRUCTPARENTS field.
  Previously this reference was populated with id = pageNumber which was broken by PR PdfStructureTreeRoot update - allowing to save Object References #1127
• PdfWriter.getCurrentPage() is made public as far as both getPageReference() and getCurrentPageNumber() are public. So this method can be used instead of writer.getPageReference(writer.getCurrentPageNumber())

Unit-Tests for the new Feature/Bugfix

• Unit-Tests added to reproduce the bug
• Unit-Tests added to the added feature

Compatibilities Issues

Is anything broken because of the new code? Any changes in method signatures?

• Visibility of one method PdfWriter.getCurrentPage() was changed from default to public, no compatibility issues expected.

Testing details

Any other details about how to test the new feature or bugfix?

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud