* Клиент не имеет доступа к данному ресурсу.
* Элемент, к которому клиент пытался получить доступ, не существует.
* и т.д.

В таких случаях обычно возвращается **HTTP-код статуса ответа** в диапазоне **400** (от 400 до 499).

Они похожи на двухсотые HTTP статус-коды (от 200 до 299), которые означают, что запрос обработан успешно.

Четырёхсотые статус-коды означают, что ошибка произошла по вине клиента.

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.plugin.descriptor.PluginDescriptor;

/**
 * Reads and writes a {@link PluginDescriptor} object to/from XML.
 *
 * @since 4.0.0
 */
@Experimental

package org.apache.maven.api.services.xml;

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

/**
 * Reads and writes a {@link Settings} object to/from XML.
 *
 * @since 4.0.0
 */
@Experimental

 * and descriptors. These services handle XML parsing, transformation, and serialization
 * while maintaining Maven's model integrity.
 *
 * @since 4.0.0
 */

 * configuration stored in settings.xml files. These settings control repository access,
 * authentication, proxies, and other Maven runtime behaviors.
 *
 * @since 4.0.0
 */

import org.apache.maven.api.Repository;
import org.apache.maven.api.Version;
import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 *
 * @since 4.0.0
 */
@Experimental
public interface VersionResolverResult extends Result<VersionResolverRequest> {

    @Nonnull
    List<Exception> getExceptions();

    @Nonnull
    Version getVersion();

    @Nonnull

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

/**
 * A listener for session events.
 * TODO: open this to other events like similar to {@code org.apache.maven.eventspy.EventSpy}
 *
 * @since 4.0.0
 */
@Experimental
@FunctionalInterface
@Consumer
public interface Listener {
    void onEvent(@Nonnull Event event);

/**
 * Marker interface for all services provided by the {@link Session}.
 * <p>
 * Services can be retrieved from the session using the
 * {@link Session#getService(Class)} method.
 *
 * @since 4.0.0
 * @see Session#getService(Class)
 */
@Experimental
@ThreadSafe

"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.apache.maven.its</groupId>
  <artifactId>b</artifactId>
  <version>0.1</version>
  <packaging>jar</packaging>

  <name>Maven Integration Test :: Dummy Artifact</name>
  <description>

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

/**
 * An {@link Artifact} that has been resolved, i.e. downloaded to the local repository.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface DownloadedArtifact extends Artifact {

    /**
     * {@return the a path to the file that has been downloaded to the file system}.
     */
    Path getPath();