import org.apache.maven.api.services.Lookup;
import org.apache.maven.api.services.LookupException;

import static java.util.Objects.requireNonNull;

/**
 * Proto-{@link Lookup} offer ways to provide early components to invoker.
 */
public class ProtoLookup implements Lookup {
    private final Map<Class<?>, Object> components;

    private ProtoLookup(Map<Class<?>, Object> components) {
        this.components = components;

        null, "" -> null
        else -> protocol
      }
    } else {
      super.getSelectedProtocol(sslSocket)
    }

  companion object {
    val isSupported: Boolean =
      try {
        // Trigger an early exception over a fatal error, prefer a RuntimeException over Error.
        Class.forName("org.openjsse.net.ssl.OpenJSSE", false, javaClass.classLoader)

        true
      } catch (_: ClassNotFoundException) {
        false

        null, "" -> null
        else -> protocol
      }
    } else {
      super.getSelectedProtocol(sslSocket)
    }

  companion object {
    val isSupported: Boolean =
      try {
        // Trigger an early exception over a fatal error, prefer a RuntimeException over Error.
        Class.forName("org.bouncycastle.jsse.provider.BouncyCastleJsseProvider", false, javaClass.classLoader)

        true

Подробнее читайте в документации: [Зависимости с `yield` — раннее завершение и `scope`](../tutorial/dependencies/dependencies-with-yield.md#early-exit-and-scope).

### Зависимости с `yield` и `StreamingResponse`, технические детали { #dependencies-with-yield-and-streamingresponse-technical-details }

   * a CountdownLatch).
   */
  @Throws(InterruptedException::class)
  public abstract fun dispatch(request: RecordedRequest): MockResponse

  /**
   * Returns an early guess of the next response, used for policy on how an incoming request should
   * be received. The default implementation returns an empty response. Mischievous implementations

        assertTrue("SuggesterException should have been thrown", exceptionThrown);
    }

    /**
     * Test switchIndex when update and search indices are the same.
     * Verifies that the method returns early without errors.
     */
    @Test
    public void testSwitchIndex_sameUpdateAndSearchIndex() throws Exception {
        final Suggester suggester = Suggester.builder().build(client, "same-index-test");

 * <ul>
 *   <li>Command-line argument parsing and processing</li>
 *   <li>Maven tool invocation ({@code mvn}, {@code mvnenc}, {@code mvnsh})</li>
 *   <li>Core extensions configuration</li>
 *   <li>Early-stage logging before the full Maven logging system is initialized</li>
 * </ul>
 *
 * <p>The main components are:</p>
 * <ul>
 *   <li>{@link org.apache.maven.api.cli.Invoker} - Base interface for executing Maven tools</li>

         */
        EXTERNAL
    }

    /**
     * Reports plugin issues applicable to the plugin as a whole.
     * <p>
     * This method should be used in "early" phase of plugin execution, possibly even when plugin or mojo descriptor
     * does not exist yet. In turn, this method will not record extra information like plugin occurrence or declaration

          message.startsWith("Found resumable session") -> Type.Handshake
          message.startsWith("Resuming session") -> Type.Handshake
          message.startsWith("Using PSK to derive early secret") -> Type.Handshake
          else -> Type.Unknown
        }

    override fun toString(): String =
      if (param != null) {
        message + "\n" + param
      } else {
        message
      }

import static java.util.Objects.requireNonNull;

/**
 * System {@link Logger}. Uses provided {@link PrintStream}s or {@link System#err} ones as fallback.
 * This logger is used in case of "early failures" (when no logging may be set up yet).
 */
public class SystemLogger implements Logger {
    private final PrintWriter out;
    private final Level threshold;

    public SystemLogger(@Nullable OutputStream out) {