assertEquals("initial", SystemUtil.getSearchEngineHttpAddress());

            // Change value and verify it's read fresh
            System.setProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS, "changed");
            assertEquals("changed", SystemUtil.getSearchEngineHttpAddress());

            // Clear property

     */
    private SystemUtil() {
    }

    /**
     * Gets the HTTP address of the search engine.
     *
     * @return The search engine HTTP address.
     */
    public static String getSearchEngineHttpAddress() {
        return System.getProperty(Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS);
    }

    /**
     * Gets the compiled pattern for matching sensitive property/environment variable keys.

                logger.debug("Options: options={}", options);
            } catch (final Exception e) {
                // ignore
            }
        }

        final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
        if (StringUtil.isNotBlank(httpAddress)) {
            System.setProperty(FesenClient.HTTP_ADDRESS, httpAddress);
        }

        TimeoutTask systemMonitorTask = null;

        }
        cmdList.add(buf.toString());

        if (useLocalFesen) {
            final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
            if (StringUtil.isNotBlank(httpAddress)) {
                cmdList.add("-D" + Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS + "=" + httpAddress);
            }
        }

        }
        cmdList.add(buf.toString());

        if (useLocalFesen) {
            final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
            if (StringUtil.isNotBlank(httpAddress)) {
                cmdList.add("-D" + Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS + "=" + httpAddress);
            }
        }

                logger.debug("Options: options={}", options);
            } catch (final Exception e) {
                // ignore
            }
        }

        final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
        if (StringUtil.isNotBlank(httpAddress)) {
            System.setProperty(FesenClient.HTTP_ADDRESS, httpAddress);
        }

        TimeoutTask systemMonitorTask = null;

        }
        cmdList.add(buf.toString());

        if (useLocalFesen) {
            final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
            if (StringUtil.isNotBlank(httpAddress)) {
                cmdList.add("-D" + Constants.FESS_SEARCH_ENGINE_HTTP_ADDRESS + "=" + httpAddress);
            }
        }

                case UNAUTHORIZED:
                    logger.warn("[{}] Unauthorized access: {}", i, SystemUtil.getSearchEngineHttpAddress(), cause);
                    break;
                default:
                    logger.debug("[{}][{}] Failed to access to Fesen ({})", i, status, SystemUtil.getSearchEngineHttpAddress(), cause);
                    break;
                }
            } else if (logger.isDebugEnabled()) {

            } catch (final Exception e) {
                // ignore
            }
        }

        initializeProbes();

        final String httpAddress = SystemUtil.getSearchEngineHttpAddress();
        if (StringUtil.isNotBlank(httpAddress)) {
            System.setProperty(FesenClient.HTTP_ADDRESS, httpAddress);
        }

        TimeoutTask systemMonitorTask = null;