return "raw";
        }

        @Override
        public Class<ModelData> getType() {
            return ModelData.class;
        }
    };

    /**
     * The tag used to denote an effective dependency management section from an imported model.
     */
    ModelCacheTag<DependencyManagement> IMPORT = new ModelCacheTag<DependencyManagement>() {

        @Override
        public String getName() {

public interface ModelBuildingResult {

    /**
     * Gets the sequence of model identifiers that denote the lineage of models from which the effective model was
     * constructed. Model identifiers should be handled as "opaque strings" and this method should be used as source
     * if navigating the linage. The first identifier from the list denotes the model on which the model builder

        if (artifact == null) {
            return null;
        }

        ArtifactHandler handler = newHandler(artifact);

        /*
         * NOTE: From Artifact.hasClassifier(), an empty string and a null both denote "no classifier". However, some
         * plugins only check for null, so be sure to nullify an empty classifier.
         */

    /**
     * Decodes the specified (portion of a) URL. <strong>Note:</strong> This decoder assumes that ISO-8859-1 is used to
     * convert URL-encoded bytes to characters.
     *
     * @param url The URL to decode, may be <code>null</code>.
     * @return The decoded URL or <code>null</code> if the input was <code>null</code>.
     */
    private static String decode(String url) {
        String decoded = url;

func errIsTierPermError(err error) bool {
	var tpErr tierPermErr
	return errors.As(err, &tpErr)
}

// remoteVersionID represents the version id of an object in the remote tier.
// Its usage is remote tier cloud implementation specific.
type remoteVersionID string

// newWarmBackend instantiates the tier type specific WarmBackend, runs
// checkWarmBackend on it.

     * verify the path and resolve the artifact if the path actually denotes an existing file. If the path isn't valid,
     * resolution will fail and no attempts to search local/remote repositories are made.
     */
    public static final String LOCAL_PATH = "localPath";

    private MavenArtifactProperties() {
        // hide constructor
    }

	}

	if _, err := xioutil.Copy(w, data); err != nil {
		return "", gcsToObjectError(err, gcs.Bucket, key)
	}

	return "", w.Close()
}

// FIXME: add support for remote version ID in GCS remote tier and remove this.
// Currently it's a no-op.
func (gcs *warmBackendGCS) Put(ctx context.Context, key string, data io.Reader, length int64) (remoteVersionID, error) {

		fi.Metadata = make(map[string]string)
	}
	fi.Metadata[ReservedMetadataPrefixLower+tierFVMarker] = ""
}

// SetSkipTierFreeVersion indicates to skip adding a tier free version id.
// Note: Used only when expiring tiered objects and the remote content has
// already been scheduled for deletion
func (fi *FileInfo) SetSkipTierFreeVersion() {
	if fi.Metadata == nil {
		fi.Metadata = make(map[string]string)
	}

    /**
     * Indicates whether network access to remote repositories has been disabled.
     *
     * @return {@code true} if remote access has been disabled, {@code false} otherwise.
     */
    boolean isOffline();

    /**
     * Enables/disables network access to remote repositories.
     *
     * @param offline {@code true} to disable remote access, {@code false} to allow network access.

    /**
     * Denotes validation as performed by Maven 3.0. This validation level is meant for existing projects.
     */
    int VALIDATION_LEVEL_MAVEN_3_0 = 30;

    /**
     * Denotes validation as performed by Maven 3.1. This validation level is meant for existing projects.
     */
    int VALIDATION_LEVEL_MAVEN_3_1 = 31;

    /**