These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla.
57fe509
Mark as end-of-life gnome-books rpm was retired from F37 in https://src.fedoraproject.org/rpms/gnome-books/c/d3cbce932c5fb457c1baf03e4ee8db0c7517d6a3?branch=rawhide
