code: public static WebApiClient getInstance(Locale locale) {
          if (null == webApiClient) {
              webApiClient = new WebApiClient(locale);
          }
          return webApiClient;
      }
docs: Returns instance of web API client for given locale. This method use
  default connection parameters from property configuration file.
  
  @param locale language.
  @return instance of web API client for given locale.