private fun validity(): Validity {
      val notBefore = if (notBefore != -1L) notBefore else System.currentTimeMillis()
      val notAfter = if (notAfter != -1L) notAfter else notBefore + DEFAULT_DURATION_MILLIS
      return Validity(
        notBefore = notBefore,
        notAfter = notAfter,
      )
    }

    private fun extensions(): MutableList<Extension> {
      val result = mutableListOf<Extension>()

    val deltaMillis = 1000.0
    val durationMillis = TimeUnit.MINUTES.toMillis((60 * 24).toLong())
    assertThat(certificate.notBefore.time.toDouble())
      .isCloseTo(now.toDouble(), deltaMillis)
    assertThat(certificate.notAfter.time.toDouble())
      .isCloseTo(now.toDouble() + durationMillis, deltaMillis)
  }

  @Test
  fun customInterval() {
    // 5 seconds starting on 1970-01-01.
    val heldCertificate =
      HeldCertificate

  /**
   * ```
   * Validity ::= SEQUENCE {
   *   notBefore      Time,
   *   notAfter       Time
   * }
   * ```
   */
  private val validity: BasicDerAdapter<Validity> =
    Adapters.sequence(
      "Validity",
      time,
      time,
      decompose = {
        listOf(
          it.notBefore,
          it.notAfter,
        )
      },
      construct = {
        Validity(

                    value = "cash.app",
                  ),
                ),
              ),
            validity =
              Validity(
                notBefore = 0L,
                notAfter = 1000L,
              ),
            subject =
              listOf(
                listOf(
                  AttributeTypeAndValue(
                    type = COMMON_NAME,

	// configured expiry and the duration until the certificate itself
	// expires.
	// We must not issue credentials that out-live the certificate.
	if validUntil := time.Until(certificate.NotAfter); validUntil < expiry {
		expiry = validUntil
	}

	// Associate any service accounts to the certificate CN
	parentUser := "tls" + getKeySeparator() + certificate.Subject.CommonName

         */
        public void setNotificationFuture(CompletableFuture<Void> future) {
            this.notificationFuture = future;
        }
    }

    /**
     * Create a new directory change notifier
     *
     * @param manager directory lease manager
     */
    public DirectoryChangeNotifier(DirectoryLeaseManager manager) {
        this.leaseManager = manager;

            public boolean isDirectory() { return fileInfo.isDirectory(); }
            // ... other attribute methods
        });
        
        return file;
    }
}
```

### 4.4 Directory Change Notifier
```java
package jcifs.internal.smb2.lease;

import jcifs.internal.smb2.ServerMessageBlock2;
import java.util.concurrent.ConcurrentHashMap;

public class DirectoryChangeNotifier {