* be used.
 * <p>
 * This interface provides methods for logging messages at different severity levels
 * and supports logging with or without associated exceptions.
 *
 * @since 4.0.0
 */
@Experimental
public interface Logger {

    /**
     * Represents the severity levels for log messages.
     */
    enum Level {
        DEBUG,
        INFO,
        WARN,
        ERROR

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

/**
 * An XML reader request.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface XmlReaderRequest {

    @Nullable
    Path getPath();

    @Nullable
    Path getRootDirectory();

    @Nullable
    URL getURL();

 * convenience, to enable developers to pass things like <code>java.lang.StringBuffer</code> directly into the logger,
 * rather than formatting first by calling <code>toString()</code>.
 *
 * @since 4.0.0
 */
@Experimental
@Provider
public interface Log {
    /**
     * {@return true if the <b>debug</b> error level is enabled}
     */
    boolean isDebugEnabled();

    /**

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

/**
 * The result of a dependency resolution request.
 *
 * @since 4.0.0
 * @see DependencyResolver#resolve(DependencyResolverRequest)
 */
@Experimental
public interface DependencyResolverResult extends Result<DependencyResolverRequest> {

    /**

 *   <li>Path sources - simple access to file content</li>
 *   <li>Build sources - POM files being actively built by Maven</li>
 *   <li>Resolved sources - POMs resolved from repositories</li>
 * </ul>
 *
 * @since 4.0.0
 */
@Experimental
public final class Sources {

    private Sources() {}

    /**
     * Creates a new source for the specified path.
     *
     * @param path the path to the file

* **`4xx`** 상태 코드는 "클라이언트 오류" 응답을 위해 사용됩니다. 이것은 아마 가장 많이 사용하게 될 두번째 유형입니다.
    * 일례로 `404` 는 "찾을 수 없음" 응답을 위해 사용합니다.
    * 일반적인 클라이언트 오류의 경우 `400` 을 사용할 수 있습니다.
* `5xx` 상태 코드는 서버 오류에 사용됩니다. 이것들을 직접 사용할 일은 거의 없습니다. 응용 프로그램 코드나 서버의 일부에서 문제가 발생하면 자동으로 이들 상태 코드 중 하나를 반환합니다.

/// tip | 팁

 * This annotation provides metadata about how the configuration property
 * should be handled, including its source, type, default value, and whether it's read-only.
 *
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.CLASS)
@Target(ElementType.FIELD)
public @interface Config {

    /**

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

import static java.util.Objects.requireNonNull;

/**
 *
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ArtifactFactoryRequest extends Request<Session> {

    String getGroupId();

    String getArtifactId();

    String getVersion();

 * <p>
 * This interface provides access to resolved artifacts, their associated paths, and any related exceptions that
 * occurred during the resolution process.
 * </p>
 *
 * @since 4.0.0
 */
@Experimental
public interface ArtifactResolverResult extends Result<ArtifactResolverRequest> {

    /**
     * Returns a collection of resolved artifacts.
     *

    assertEquals((Integer) 2, it.next());
    it.remove();
    // After this remove, 400 has moved up and 20 down past cursor
    assertTrue("Heap is not intact after remove", mmHeap.isIntact());
    assertEquals((Integer) 10, it.next());
    assertEquals((Integer) 3, it.next());
    it.remove();
    // After this remove, 400 moved down again and 500 up past the cursor