def get_staff(self, gradebook_id, simple=False):
        staff_data = self.get(
            'staff/{gradebookId}'.format(
                gradebookId=gradebook_id or self.gradebook_id
            ),
            params=None,
        )
        if simple:
            simple_list = []
            unraveled_list = self.unravel_staff(staff_data)
            for member in unraveled_list.__iter__():
                simple_list.append({
                    'accountEmail': member['accountEmail'],
                    'displayName': member['displayName'],
                    'role': member['role'],
                })
            return simple_list
        return staff_data['data']