code: public SystemResponse getUniverseSystemsSystemId(Integer systemId, String acceptLanguage, String datasource,
              String ifNoneMatch, String language) throws ApiException {
          ApiResponse<SystemResponse> resp = getUniverseSystemsSystemIdWithHttpInfo(systemId, acceptLanguage, datasource,
                  ifNoneMatch, language);
          return resp.getData();
      }
docs: Get solar system information Get information on a solar system. --- This
  route expires daily at 11:05
  
  @param systemId
  system_id integer (required)
  @param acceptLanguage
  Language to use in the response (optional, default to en-us)
  @param datasource
  The server name you would like data from (optional, default to
  tranquility)
  @param ifNoneMatch
  ETag from a previous request. A 304 will be returned if this
  matches the current ETag (optional)
  @param language
  Language to use in the response, takes precedence over
  Accept-Language (optional, default to en-us)
  @return SystemResponse
  @throws ApiException
  If fail to call the API, e.g. server error or cannot
  deserialize the response body