* that can handle various types of {@link InvokerRequest InvokerRequests}. It also implements
 * {@link AutoCloseable} to ensure proper resource management.</p>
 *
 * @since 4.0.0
 */
@Experimental
public interface Invoker extends AutoCloseable {
    /**
     * Invokes the Maven application using the provided {@link InvokerRequest}.

 * Each {@code ArtifactCoordinates} instance is basically a pointer to a file in the Maven repository,
 * except that the exact version may not be known yet.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ArtifactCoordinates {
    /**
     * {@return the group identifier of the artifact}.
     */
    @Nonnull
    String getGroupId();

    /**

/**
 * Exception thrown by {@link Interpolator} implementations when an error occurs during interpolation.
 * This can include syntax errors in variable placeholders or recursive variable references.
 *
 * @since 4.0.0
 */
@Experimental
public class InterpolatorException extends MavenException {

    @Serial
    private static final long serialVersionUID = -1219149033636851813L;

    /**

 * container: this annotation is only effective on fields of the Mojo class itself, nested bean injection
 * requires Sisu or JSR330 annotations.
 *
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
@Inherited
public @interface Parameter {
    /**

## Version 4.0.0

_2019-06-26_

**This release upgrades OkHttp to Kotlin.** We tried our best to make fast and safe to upgrade
from OkHttp 3.x. We wrote an [upgrade guide][upgrading_to_okhttp_4] to help with the migration and a
[blog post][okhttp4_blog_post] to explain it.

 *  Fix: Target Java 8 bytecode for Java and Kotlin.


## Version 4.0.0-RC3

_2019-06-24_

 * <li>{@link ThreadSafe}: Implies that implementations of this interface must
 * be safe to invoke from multiple threads concurrently.</li>
 * </ul>
 *
 * @since 4.0.0
 */
@Experimental
@FunctionalInterface
@Consumer
@ThreadSafe
public interface Mojo {
    /**
     * Executes the behavior defined by this {@code Mojo}. This method is invoked

import org.apache.maven.api.annotations.Nullable;

import static java.util.Objects.requireNonNull;

/**
 * A request for installing one or more artifacts in the local repository.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ArtifactInstallerRequest extends Request<Session> {

    @Nonnull
    Collection<ProducedArtifact> getArtifacts();

    @Nonnull

 * under the License.
 */
package org.apache.maven.api.services;

import org.apache.maven.api.annotations.Experimental;

/**
 * Base class for all maven exceptions carrying {@link BuilderProblem}s.
 *
 * @since 4.0.0
 */
@Experimental
public abstract class MavenBuilderException extends MavenException {

    /**
     * The collection of problems associated with this exception.
     */

    * 🎁 💼 `204`, "🙅‍♂ 🎚". 👉 📨 ⚙️ 🕐❔ 📤 🙅‍♂ 🎚 📨 👩‍💻, & 📨 🔜 🚫 ✔️ 💪.
* **`300`** & 🔛 "❎". 📨 ⏮️ 👫 👔 📟 5️⃣📆 ⚖️ 5️⃣📆 🚫 ✔️ 💪, 🌖 `304`, "🚫 🔀", ❔ 🔜 🚫 ✔️ 1️⃣.
* **`400`** & 🔛 "👩‍💻 ❌" 📨. 👫 🥈 🆎 👆 🔜 🎲 ⚙️ 🏆.
    * 🖼 `404`, "🚫 🔎" 📨.
    * 💊 ❌ ⚪️➡️ 👩‍💻, 👆 💪 ⚙️ `400`.
* `500` & 🔛 💽 ❌. 👆 🌖 🙅 ⚙️ 👫 🔗. 🕐❔ 🕳 🚶 ❌ 🍕 👆 🈸 📟, ⚖️ 💽, ⚫️ 🔜 🔁 📨 1️⃣ 👫 👔 📟.

/// tip

 * to avoid rewriting usual code.
 *
 * @since 2.0.9
 * @deprecated Use {@link org.apache.maven.api.Toolchain} instead.
 */
@Deprecated(since = "4.0.0")
public abstract class DefaultToolchain // should have been AbstractToolchain...
implements Toolchain, ToolchainPrivate {
    private final Logger logger;

    private String type;