docs: public UserListResult getUserList(int start, int count)
              throws APIConnectionException, APIRequestException {
  
          if (start < 0 || count <= 0 || count > 500) {
              throw new IllegalArgumentException("negative index or count must more than 0 and less than 501");
          }
          ResponseWrapper response = _httpClient.sendGet(_baseUrl + userPath + "?start=" + start + "&count=" + count);
          return UserListResult.fromResponse(response, UserListResult.class);
  
      }