final boolean ignoreExceptions, final Property[] properties, final Level minLevel) {
        super(name, filter, layout, ignoreExceptions, properties);
        this.minLevel = minLevel;
    }

    @Override
    public void append(final LogEvent event) {
        final String loggerName = event.getLoggerName();
        if (loggerName != null) {

			</Policies>
			<DefaultRolloverStrategy fileIndex="max" min="1"
				max="${backup.max.history}" compressionLevel="9" />
		</RollingFile>
		<LogNotificationAppender name="LogNotification"
			minLevel="${sys:fess.log.notification.level:-ERROR}" />
	</Appenders>

	<Loggers>
		<Logger name="org.codelibs" additivity="false" level="${log.level}">
			<AppenderRef ref="AppFile" />
			<AppenderRef ref="LogNotification" />

			</Policies>
			<DefaultRolloverStrategy fileIndex="max" min="1"
				max="${backup.max.history}" compressionLevel="9" />
		</RollingFile>
		<LogNotificationAppender name="LogNotification"
			minLevel="${sys:fess.log.notification.level:-ERROR}" />
	</Appenders>

	<Loggers>
		<Logger name="org.codelibs.fess" additivity="false" level="${log.level}">
			<AppenderRef ref="AppFile" />

			</Policies>
			<DefaultRolloverStrategy fileIndex="max" min="1"
				max="${backup.max.history}" compressionLevel="9" />
		</RollingFile>
		<LogNotificationAppender name="LogNotification"
			minLevel="${sys:fess.log.notification.level:-ERROR}" />
	</Appenders>

	<Loggers>
		<Logger name="org.codelibs.fess" additivity="false" level="${log.level}">
			<AppenderRef ref="AppFile" />

					<IfFileName glob="fess-llm*.log.gz" />
					<IfLastModified age="P${backup.max.age}D" />
				</Delete>
			</DefaultRolloverStrategy>
		</RollingFile>
		<LogNotificationAppender name="LogNotification"
			minLevel="${sys:fess.log.notification.level:-ERROR}" />
	</Appenders>

	<Loggers>
		<Logger name="org.codelibs" additivity="false" level="${log.level}">
			<AppenderRef ref="AppFile" />
			<AppenderRef ref="LogNotification" />