code: def describe_users(self, users_filter=None):
          
          user_list = Users(oktypes=User)
          for user in self._user_list:
              if users_filter and (users_filter.get('name') == user.name or users_filter.get('uid') == user.uid):
                  user_list.append(user)
          return user_list
docs: Return a list of users matching a filter (if provided).