Our pseudonymization mechanism in org.jabref.logic.pseudonymization.Pseudonymization is not exhaustive - for instance, it misses the pseudonymization of groups.
The goal is to add that.

Additional context

• JabRef groups: https://docs.jabref.org/finding-sorting-and-cleaning-entries/groups
• The information about groups is contained in the .bib file itself, at the bottom, with @Comment.
• One can explore the above using Chocolate.bib and co-relate with what is happening in the GUI (groups section, and also by adding new groups).
• The entry point to use pseudonymization is currently under JabKit (CLI), with hints to use in this PR that added it.
• Use JabRef's classes to interact with groups (this also updates @Comment content)
• Remember that groups field has multiple groups - and the names are the links into the groups tree.