code: def handle_first_release_line(entries, manager):
      
      # It's remotely possible the changelog is totally empty...
      if not entries:
          return
      # Obtain (short-circuiting) first Release obj.
      first_release = None
      for obj in entries:
          if isinstance(obj, Release):
              first_release = obj
              break
      # It's also possible it's non-empty but has no releases yet.
      if first_release:
          manager.add_family(obj.family)
      # If God did not exist, man would be forced to invent him.
      else:
          manager.add_family(0)
docs: Set up initial line-manager entry for first encountered release line.
  
      To be called at start of overall process; afterwards, subsequent major
      lines are generated by `handle_upcoming_major_release`.