code: public static void configure() {
          InputStream inputStream = null;
          try {
              LOG.debug("Loading esigate-vars.properties file");
              inputStream = Driver.class.getResourceAsStream("/esigate-vars.properties");
              if (inputStream == null) {
                  inputStream = Driver.class.getResourceAsStream("vars.properties");
              }
              if (inputStream != null) {
                  properties = new Properties();
                  properties.load(inputStream);
              }
          } catch (IOException e) {
              throw new ConfigurationException(e);
          } finally {
              if (inputStream != null) {
                  try {
                      inputStream.close();
                  } catch (IOException e) {
                      // nothing to do
                  }
              }
          }
      }
docs: Loads variables according to default configuration file org/esigate/vars.properties.