Fess is based on [OpenSearch](https://github.com/opensearch-project/OpenSearch), but knowledge/experience about OpenSearch is _not_ required. Fess provides an easy to use Administration GUI to configure the system via your browser.

    public Integer purgeSuggestSearchLogDay;

    /**
     * LDAP server URL for authentication.
     * Used when LDAP authentication is enabled.
     */
    @Size(max = 1000)
    public String ldapProviderUrl;

    /**
     * LDAP security principal for binding to the LDAP server.
     * Used for authenticating with the LDAP server.
     */
    @Size(max = 1000)
    public String ldapSecurityPrincipal;

 * field with the `@StartStop` annotation:
 *
 * ```java
 * @StartStop public final MockWebServer server = new MockWebServer();
 * ```
 *
 * Or for Kotlin:
 *
 * ```kotlin
 * @StartStop val server = MockWebServer()
 * ```
 */
@Target(AnnotationTarget.FIELD)
@Retention(AnnotationRetention.RUNTIME)
@ExtendWith(StartStopExtension::class)

    assertTrue(SortedIterables.hasSameComparator(Ordering.natural(), Maps.newTreeMap().keySet()));
    assertTrue(
        SortedIterables.hasSameComparator(
            Ordering.natural().reverse(), Sets.newTreeSet(Ordering.natural().reverse())));
  }

  public void testComparator() {
    assertEquals(Ordering.natural(), SortedIterables.comparator(Sets.newTreeSet()));
  }

    assertThat(max(a, b)).isSameInstanceAs(a);
  }

  public void testMinMaxComparator() {
    Comparator<Integer> reverse = reverseOrder();
    assertThat(min(1, 2, reverse)).isEqualTo(2);
    assertThat(min(2, 1, reverse)).isEqualTo(2);
    assertThat(max(1, 2, reverse)).isEqualTo(1);
    assertThat(max(2, 1, reverse)).isEqualTo(1);
  }

  /**

#                                                     ------
# Does it send mock mail? (true: no send actually, logging only)
mail.send.mock = false

# SMTP server settings for main: host:port
mail.smtp.server.main.host.and.port = localhost:25

# The prefix of subject to show test environment or not
mail.subject.test.prefix = 

# The common return path of all mail
mail.return.path = root@localhost

#                                                     ------
# Does it send mock mail? (true: no send actually, logging only)
mail.send.mock = false

# SMTP server settings for main: host:port
mail.smtp.server.main.host.and.port = localhost:25

# The prefix of subject to show test environment or not
mail.subject.test.prefix = 

# The common return path of all mail
mail.return.path = root@localhost

    server.enqueue(
      MockResponse
        .Builder()
        .body(
          Buffer()
            .write(ByteArray(responseBodySize)),
        ).throttleBody(64 * 1024, 125, MILLISECONDS) // 500 Kbps
        .build(),
    )
    server.enqueue(MockResponse(body = "."))

    val call = client.newCall(Request.Builder().url(server.url("/")).build())

      if (args.size != 1 || args[0].startsWith("-")) {
        println("Usage: Http2Server <base directory>")
        return
      }
      val server =
        Http2Server(
          File(args[0]),
          localhost().sslContext().socketFactory,
        )
      server.run()
    }
  }

import org.codelibs.fess.app.web.base.FessSearchAction;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;

/**
 * Action class for handling HTTP 500 Internal Server Error pages.
 * This action displays error pages when the server encounters
 * an unexpected condition that prevents it from fulfilling the request.
 */
public class ErrorSystemerrorAction extends FessSearchAction {

    /**