} else if (!a.getType().equals(getType())) {
                return false;
            } else {
                return a.getClassifier() == null
                        ? getClassifier() == null
                        : a.getClassifier().equals(getClassifier());
            }
        } else {
            return false;
        }
    }

                    if (classifier == null) {
                        if (a.getClassifier() != null) {
                            result = 1;
                        }
                    } else {
                        if (a.getClassifier() != null) {
                            result = classifier.compareTo(a.getClassifier());
                        } else {
                            result = -1;

    /**
     * Returns the classifier of the artifact.
     *
     * @return the classifier or an empty string if none, never {@code null}
     * @see ArtifactCoordinates#getClassifier()
     */
    @Nonnull
    String getClassifier();

    /**
     * Returns the file extension of the artifact.
     * The dot separator is not included in the returned string.
     *

        result = 31 * result + a.getType().hashCode();
        if (a.getVersion() != null) {
            result = 31 * result + a.getVersion().hashCode();
        }
        result = 31 * result + (a.getClassifier() != null ? a.getClassifier().hashCode() : 0);
        result = 31 * result + (a.getScope() != null ? a.getScope().hashCode() : 0);
        result = 31 * result

    String getArtifactId();

    /**
     * Returns the classifier of the artifact.
     *
     * @return the classifier or an empty string if none, never {@code null}
     */
    @Nonnull
    String getClassifier();

    /**
     * {@return the specific version, range of versions, or meta-version of the artifact}.
     * A meta-version is a version suffixed with the {@code SNAPSHOT} keyword.
     */
    @Nonnull

@Experimental
@Immutable
public interface ArtifactCoordinatesFactoryRequest extends Request<Session> {

    String getGroupId();

    String getArtifactId();

    String getVersion();

    String getClassifier();

    String getExtension();

    String getType();

    String getCoordinatesString();

    @Nonnull
    static ArtifactCoordinatesFactoryRequest build(

        path.append(artifact.getExtension()).append("s/");

        path.append(artifact.getArtifactId()).append('-').append(artifact.getVersion());

        if (!artifact.getClassifier().isEmpty()) {
            path.append('-').append(artifact.getClassifier());
        }

        path.append('.').append(artifact.getExtension());

        return path.toString();
    }

    @Override

                        .getGroupId())
                .artifactId(coordinates.getArtifactId())
                .version(coordinates.getVersionConstraint().toString())
                .classifier(coordinates.getClassifier())
                .extension(coordinates.getExtension())
                .build();
    }

    @Nonnull
    static DependencyCoordinatesFactoryRequest build(@Nonnull Session session, @Nonnull Dependency dependency) {

                session,
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion().toString(),
                artifact.getClassifier(),
                artifact.getExtension(),
                null));
    }

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

    String getGroupId();

    String getArtifactId();

    String getVersion();

    String getClassifier();

    String getExtension();

    String getType();

    static ArtifactFactoryRequest build(
            Session session, String groupId, String artifactId, String version, String extension) {