docs: def project_users_with_administrator_permissions(self, key):
          """
          Get project administrators for project
          :param key: project key
          :return: project administrators
          """
          project_administrators = [user['user'] for user in self.project_users(key)
                                    if user['permission'] == 'PROJECT_ADMIN']
          for group in self.project_groups_with_administrator_permissions(key):
              for user in self.group_members(group):
                  project_administrators.append(user)
          return project_administrators