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

        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();
    }

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

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

                artifact.getArtifactId(),
                artifact.getVersion(),
                null,
                artifact.getProperty(ArtifactProperties.TYPE, artifact.getExtension()),
                nullify(artifact.getClassifier()),
                handler);

        result.setFile(artifact.getFile());
        result.setResolved(artifact.getFile() != null);

        List<String> trail = new ArrayList<>(1);

        assertEquals("1.0", depArtifact.getBaseVersion());
        assertNull(depArtifact.getFile());
        assertFalse(depArtifact.isSnapshot());
        assertEquals("", depArtifact.getClassifier());
        assertEquals("jar", depArtifact.getExtension());
        assertEquals("java", depArtifact.getProperty("language", null));
        assertEquals("jar", depArtifact.getProperty("type", null));

@Experimental
@Immutable
public interface ArtifactFactoryRequest {

    @Nonnull
    Session getSession();

    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) {

                        result.addException(exception);
                    }
                }
            } else {
                String key = SNAPSHOT + getKey(artifact.getClassifier(), artifact.getExtension());
                merge(infos, SNAPSHOT, key);
                if (!resolve(result, infos, key)) {
                    result.setVersion(version);
                }
            }

        this(type, type);
    }

    public TestArtifactHandler(String type, String extension) {
        this.type = type;
        this.extension = extension;
    }

    @Override
    public String getClassifier() {
        return null;
    }

    @Override
    public String getDirectory() {
        return getPackaging() + "s";
    }

    @Override
    public String getExtension() {

        path.append(artifact.getArtifactId()).append(ARTIFACT_SEPARATOR).append(artifact.getVersion());

        if (artifact.hasClassifier()) {
            path.append(ARTIFACT_SEPARATOR).append(artifact.getClassifier());
        }

        if (artifactHandler.getExtension() != null
                && !artifactHandler.getExtension().isEmpty()) {
            path.append(GROUP_SEPARATOR).append(artifactHandler.getExtension());