// After update, should not be expired with long timeout
        assertFalse(registration.isExpired(60000));

        // Verify heartbeat was actually updated
        assertTrue(registration.getLastHeartbeat() > initialTime);
    }

    @Test
    void testExpiration() throws InterruptedException {
        // Registration should not be expired initially with long timeout

        this.permanent = permanent;
        this.startTime = System.currentTimeMillis();
    }

    /**
     * Returns whether the task has expired.
     *
     * @return whether the task has expired
     */
    public boolean isExpired() {
        return System.currentTimeMillis() >= startTime + timeoutMillis;
    }

    /**
     * Returns whether the task is permanent.
     *

    }

    public void test_expired_method_exists() throws Exception {
        assertNotNull("expired method should exist", HotThreadMonitorTarget.class.getMethod("expired"));
    }

    public void test_expired_method_can_be_called() {
        try {
            target.expired();
        } catch (Exception e) {
            // Expected that it may fail due to missing dependencies in test environment

        return heartbeatFailures;
    }

    /**
     * Checks if this registration has expired based on the timeout.
     *
     * @param timeoutMs the timeout in milliseconds
     * @return true if the registration is expired
     */
    public boolean isExpired(long timeoutMs) {
        return System.currentTimeMillis() - lastHeartbeat > timeoutMs;
    }

    // Getters and setters

import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;

/**
 * Job for purging expired documents from the search index.
 * This job removes documents that have passed their expiration time based on the expires field.
 * It helps maintain the search index by cleaning up outdated content automatically.
 */
public class PurgeDocJob {

    /*
     * (non-Javadoc)
     *
     * @see org.seasar.extension.timer.TimeoutTarget#expired()
     */
    @Override
    public void expired() {
        if (clientConnectionManager == null) {
            logger.warn("clientConnectionManager is null.");
            return;
        }

        try {
            // Close expired connections
            clientConnectionManager.closeExpiredConnections();

    }

    public void test_expired_method_exists() throws Exception {
        assertNotNull("expired method should exist", SystemMonitorTarget.class.getMethod("expired"));
    }

    public void test_expired_method_can_be_called() {
        // Instead of directly calling expired() which may fail due to system dependencies
        // in test environments, we test that the method exists and can be invoked

        if (thread != null) {
            return thread.isInterrupted();
        }
        return true;
    }

    /**
     * Returns the list of expired {@link TimeoutTask}.
     *
     * @return the list of expired {@link TimeoutTask}
     */
    protected synchronized List<TimeoutTask> getExpiredTask() {
        final List<TimeoutTask> expiredTask = new ArrayList<>();

 *
 * <p>Valid:
 *
 * <ul>
 *   <li>Live: valid key/value are set
 *   <li>Loading: loading is pending
 * </ul>
 *
 * <p>Invalid:
 *
 * <ul>
 *   <li>Expired: time expired (key/value may still be set)
 *   <li>Collected: key/value was partially collected, but not yet cleaned up
 *   <li>Unset: marked as unset, awaiting cleanup or reuse
 * </ul>
 */
@GwtIncompatible

        runningThread = thread;
        running.set(true);
    }

    /**
     * {@inheritDoc}
     *
     * @see org.codelibs.core.timer.TimeoutTarget#expired()
     */
    @Override
    public void expired() {
        int count = 0;
        while (running.get() && count < MAX_LOOP_COUNT) {
            if (logger.isDebugEnabled()) {
                logger.debug("Interrupt {}", runningThread);