return getAsInteger(FessConfig.search_engine_HTTP_SSL_certificate_authorities);
        }

        public String getSearchEngineUsername() {
            return get(FessConfig.search_engine_USERNAME);
        }

        public Integer getSearchEngineUsernameAsInteger() {
            return getAsInteger(FessConfig.search_engine_USERNAME);
        }

            public BigDecimal getAsDecimal(String propertyKey) {
                return DfTypeUtil.toBigDecimal(get(propertyKey));
            }

            @Override
            public Integer getAsInteger(String propertyKey) {
                return DfTypeUtil.toInteger(get(propertyKey));
            }

            public String getQueryDefaultQueryType() {
                return "bool";
            }

                default:
                    throw new ConfigPropertyNotFoundException(propertyKey);
                }
            }

            @Override
            public Integer getAsInteger(String propertyKey) {
                String value = get(propertyKey);
                if (value == null) {
                    return null;
                }
                try {

    }

    Integer getAsInteger(String propertyKey);

    Integer getSearchEngineHeartbeatIntervalAsInteger();

    default long getFesenHeartbeatInterval() {
        Integer value = getSearchEngineHeartbeatIntervalAsInteger();
        if (value != null) {
            return value.longValue();
        }
        value = getAsInteger("elasticsearch.heartbeat_interval");

            public BigDecimal getAsDecimal(String propertyKey) {
                return DfTypeUtil.toBigDecimal(get(propertyKey));
            }

            @Override
            public Integer getAsInteger(String propertyKey) {
                return DfTypeUtil.toInteger(get(propertyKey));
            }

            @Override
            public String getQueryDefaultQueryType() {
                return queryType;