code: public UserInfoResult[] getBlackList(String username)
              throws APIConnectionException, APIRequestException {
          StringUtils.checkUsername(username);
          ResponseWrapper response = _httpClient.sendGet(_baseUrl + userPath + "/" + username + "/blacklist");
          return _gson.fromJson(response.responseContent, UserInfoResult[].class);
      }
docs: Get a user's all black list
  
  @param username The owner of the black list
  @return UserList
  @throws APIConnectionException connect exception
  @throws APIRequestException    request exception