code: private boolean isQuickQuery() {
          boolean quickQuery;
  
          try {
              quickQuery = settings.getBoolean(Settings.KEYS.DOWNLOADER_QUICK_QUERY_TIMESTAMP, true);
          } catch (InvalidSettingException e) {
              if (LOGGER.isTraceEnabled()) {
                  LOGGER.trace("Invalid settings : {}", e.getMessage(), e);
              }
              quickQuery = true;
          }
          return quickQuery;
      }
docs: Determines if the HTTP method GET or HEAD should be used to check the
  timestamp on external resources.
  
  @return true if configured to use HEAD requests