}
                    systemCpuCheckTime = now;
                }
            }
        }
        return systemCpuPercent;
    }

    public Map<String, String> getFilteredEnvMap(final String keyPattern) {
        final Pattern pattern = Pattern.compile(keyPattern);
        return getEnvMap().entrySet().stream().filter(e -> {
            final String key = e.getKey();