Flutter - PopupMenuButton - add an item manually after adding items from a list

I have a PopupMenuButton which displays items from a List.

List<Subject> subjects = [
  Subject(
    name: 'English',
    iconFile: 'english.jpg',
  ),
  Subject(
    name: 'Mathematics',
    iconFile: 'maths.jpg',
  ),
  Subject(
    name: 'Business Studies',
    iconFile: 'business.jpg',
  ),
];

Below is PopupMenuButton code where the list is used to generate the menu items:

child: PopupMenuButton<Subject>(
              color: Color.fromARGB(255, 95, 115, 231),
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(10)),
              onSelected: _changeSubject,
              itemBuilder: (BuildContext context) {
                return subjects.map((Subject subject) {
                  return PopupMenuItem<Subject>(
                    value: subject,
                    child: Text(subject.name),
                  );
                }).toList();
              },
            ),

This works as intended. Now I want to add another item "Sign Out" below "Business Studies" (as in this image link -> PopupMenuButton) and a divider between them. I don't want to add "Sign Out" to the subjects list. Is it possible to add another PopupMenuItem manually after all the generated items?

You can do like this. result image

return PopupMenuButton(
      color: const Color.fromARGB(255, 95, 115, 231),
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
      itemBuilder: (context) => <PopupMenuEntry>[
        ...subjects
            .map((s) => PopupMenuItem(value: s, child: Text(s.name)))
            .toList(),
        const PopupMenuDivider(),
        PopupMenuItem(
          onTap: () {},
          value: "LogOut",
          child: const Text('LogOut'),
        ),
      ],
    );