return
	}

	expiry, err := globalIAMSys.STSTLSConfig.GetExpiryDuration(r.Form.Get(stsDurationSeconds))
	if err != nil {
		writeSTSErrorResponse(ctx, w, ErrSTSMissingParameter, err)
		return
	}

	// We set the expiry of the temp. credentials to the minimum of the
	// configured expiry and the duration until the certificate itself
	// expires.

Following example shows how you can use [`minio-go` PresignedGetObject](https://docs.min.io/community/minio-object-store/developers/go/API.html#presignedgetobject-ctx-context-context-bucketname-objectname-string-expiry-time-duration-reqparams-url-values-url-url-error)
```go
package main

import (
	"context"
	"log"
	"net/url"
	"time"
	"fmt"

	"github.com/minio/minio-go/v7"

    /** Parameter key for controlling deletion of old documents */
    private static final String DELETE_OLD_DOCS = "delete_old_docs";

    /** Parameter key for controlling retention of expired documents */
    private static final String KEEP_EXPIRES_DOCS = "keep_expires_docs";

    /**
     * Interval in milliseconds between crawler thread executions.

        public MonitorTarget(final JobLog jobLog) {
            this.jobLog = jobLog;
        }

        /**
         * Called when the timeout expires. Updates the job log if the job is still running.
         */
        @Override
        public void expired() {
            if (jobLog.getEndTime() == null) {
                jobLog.setLastUpdated(ComponentUtil.getSystemHelper().getCurrentTimeAsLong());

    }

    // Test method chaining with multiple expiry calls
    public void test_expiryChaining() {
        PurgeThumbnailJob result = purgeThumbnailJob.expiry(1000L)
                .expiry(2000L)
                .expiry(0) // Should not change
                .expiry(3000L);

        assertSame(purgeThumbnailJob, result);

        // 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

  /** If a cookie incorrectly defines multiple 'Expires' attributes, the last one defined wins.  */
  @Test fun lastExpiresAtWins() {
    assertThat(
      parseCookie(
        0L,
        url,
        "a=b; " +
          "Expires=Thu, 01 Jan 1970 00:00:02 GMT; " +
          "Expires=Thu, 01 Jan 1970 00:00:04 GMT; " +
          "Expires=Thu, 01 Jan 1970 00:00:01 GMT; " +
          "Expires=Thu, 01 Jan 1970 00:00:03 GMT",

    }

    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

        this.timeoutMillis = timeout * 1000L;
        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", 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