# java version (default: java from PATH, currently $(java -version 2>&1 | grep version))
  -java-home <path>  Alternate JAVA_HOME

  # jvm options and output control
  -Dkey=val          Pass -Dkey=val directly to the java runtime
  -J-X               Pass option -X directly to the java runtime
                     (-J is stripped)

  # environment variables (read from context)

	ctx, cancel := context.WithTimeout(ctx, timeout)
	defer cancel()

	c := make(chan ioret[V], 1)
	go func() {
		v, err := work(ctx)
		c <- ioret[V]{val: v, err: err}
	}()

	select {
	case v := <-c:
		return v.val, v.err
	case <-ctx.Done():
		var zero V
		return zero, ctx.Err()
	}
}

// DeadlineWorker implements the deadline/timeout resiliency pattern.

		return l, err
	}

	getCfgVal := func(cfgParam string) string {
		// As parameters are already validated, we skip checking
		// if the config param was found.
		val, _, _ := s.ResolveConfigParam(config.IdentityLDAPSubSys, config.Default, cfgParam, false)
		return val
	}

	ldapServer := getCfgVal(ServerAddr)
	if ldapServer == "" {
		return l, nil
	}
	l.LDAP = ldap.Config{
		ServerAddr:    ldapServer,

Aber schauen wir uns zunächst ein paar kleine Konzepte an.

## In Eile?

Wenn Ihnen diese Begriffe egal sind und Sie einfach *jetzt* Sicherheit mit Authentifizierung basierend auf Benutzername und Passwort hinzufügen müssen, fahren Sie mit den nächsten Kapiteln fort.

## OAuth2

    /**
     * A DNS that uses [InetAddress.getAllByName] to ask the underlying operating system to
     * lookup IP addresses. Most custom [Dns] implementations should delegate to this instance.
     */
    @JvmField
    val SYSTEM: Dns = DnsSystem()

    private class DnsSystem : Dns {
      override fun lookup(hostname: String): List<InetAddress> {
        try {
          return InetAddress.getAllByName(hostname).toList()

import javax.net.ssl.SSLSession
import javax.net.ssl.SSLSessionContext
import javax.security.cert.X509Certificate

/** An [SSLSession] that delegates all calls.  */
abstract class DelegatingSSLSession(protected val delegate: SSLSession?) : SSLSession {
  override fun getId(): ByteArray {
    return delegate!!.id
  }

  override fun getSessionContext(): SSLSessionContext {
    return delegate!!.sessionContext
  }

                }
                else if ( ch == ',' || ch == ']' ) {
                    String val = str.substring(mark, si).trim();
                    mark = si + 1;
                    if ( key == null )
                        key = "endpoint";
                    if ( binding != null ) {
                        binding.setOption(key, val);
                    }
                    key = null;
                }

constraints.Future.message      = {item} doit être dans le futur.
constraints.Max.message         = {item} doit être plus petit ou égal à {value}.
constraints.Min.message         = {item} doit être plus grand ou égal à {value}.
constraints.NotNull.message     = {item} ne peut pas être null.
constraints.Null.message        = {item} doit être null.

  fun intercept(chain: Chain): Response

  companion object {
    /**
     * Constructs an interceptor for a lambda. This compact syntax is most useful for inline
     * interceptors.
     *
     * ```kotlin
     * val interceptor = Interceptor { chain: Interceptor.Chain ->
     *     chain.proceed(chain.request())
     * }
     * ```
     */

```Python hl_lines="4"
{!> ../../docs_src/python_types/tutorial006.py!}
```

////

/// info

De interne types tussen vierkante haakjes worden “typeparameters” genoemd.

In dit geval is `str` de typeparameter die wordt doorgegeven aan `List` (of `list` in Python 3.9 en hoger).

///

Dat betekent: “de variabele `items` is een `list`, en elk van de items in deze list is een `str`”.

/// tip