code: @Override
      public void init(ServletConfig config) throws ServletException {
          super.init(config);
          this.expiresMinutes = readLong(config.getInitParameter(INIT_PARAM_EXPIRES_MINUTES), this.expiresMinutes);
          this.cacheControl = config.getInitParameter(INIT_PARAM_CACHE_CONTROL) != null ? config.getInitParameter(INIT_PARAM_CACHE_CONTROL) : this.cacheControl;
          this.autoCorrectUrlsInCSS = readBoolean(config.getInitParameter(INIT_PARAM_AUTO_CORRECT_URLS_IN_CSS), this.autoCorrectUrlsInCSS);
          this.turnOffETag = readBoolean(config.getInitParameter(INIT_PARAM_TURN_OFF_E_TAG), this.turnOffETag);
          this.turnOffUrlFingerPrinting = readBoolean(config.getInitParameter(INIT_PARAM_TURN_OFF_URL_FINGERPRINTING), this.turnOffUrlFingerPrinting);
          this.customContextPathForCSSUrls = config.getInitParameter(INIT_PARAM_CUSTOM_CONTEXT_PATH_FOR_CSS_URLS);
          this.overrideExistingHeaders = readBoolean(config.getInitParameter(INIT_PARAM_OVERRIDE_EXISTING_HEADERS), this.overrideExistingHeaders);
          LOGGER.debug("Servlet initialized: {\n\t{}:{},\n\t{}:{},\n\t{}:{},\n\t{}:{}\n\t{}:{}\n:{}\n}",
                  INIT_PARAM_EXPIRES_MINUTES, String.valueOf(this.expiresMinutes),
                  INIT_PARAM_CACHE_CONTROL, this.cacheControl,
                  INIT_PARAM_AUTO_CORRECT_URLS_IN_CSS, String.valueOf(this.autoCorrectUrlsInCSS),
                  INIT_PARAM_TURN_OFF_E_TAG, String.valueOf(this.turnOffETag),
                  INIT_PARAM_TURN_OFF_URL_FINGERPRINTING, String.valueOf(this.turnOffUrlFingerPrinting),
                  INIT_PARAM_OVERRIDE_EXISTING_HEADERS, String.valueOf(this.overrideExistingHeaders)
          );
      }
docs: default enabled fingerprinting