code: 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']