}

    @Override
    public Version getBaseVersion() {
        return session.parseVersion(artifact.getBaseVersion());
    }

    @Nonnull
    @Override
    public String getExtension() {
        return artifact.getExtension();
    }

    @Nonnull
    @Override
    public String getClassifier() {
        return artifact.getClassifier();
    }

    @Override
    public boolean isSnapshot() {

                        isAny(relocation.target.getClassifier()) ? null : relocation.target.getClassifier(),
                        isAny(relocation.target.getExtension()) ? null : relocation.target.getExtension(),
                        isAny(relocation.target.getVersion()) ? null : relocation.target.getVersion(),
                        relocation.global ? "User global relocation" : "User project relocation");

     * ivy and the extension is xml.
     *
     * @see #getType()
     */
    @Nullable
    String getExtension();

    /**
     * Sets the extension of this artifact.
     */
    void setExtension(@Nullable String extension);

    /**
     * Returns the classifier of this artifact.
     */
    @Nullable
    String getClassifier();

    /**

    @Override
    public String getFileName() {
        String classifier = StringUtils.isNotEmpty(name.getClassifier()) ? "-" + name.getClassifier() : "";
        String extension = StringUtils.isNotEmpty(name.getExtension()) ? "." + name.getExtension() : "";
        return name.getName() + "-" + componentIdentifier.getVersion() + classifier + extension;
    }

    @Override
    public String getDisplayName() {

    }

    @Override
    public String getExtension() {
        return dependency.getArtifact().getExtension();
    }

    @Override
    public Type getType() {
        String type = dependency
                .getArtifact()
                .getProperty(ArtifactProperties.TYPE, dependency.getArtifact().getExtension());
        return session.requireType(type);
    }

    @Nonnull

                    .classifier(artifact.getClassifier())
                    .extension(artifact.getExtension())
                    .version(getVersion())
                    .updated(lastUpdated)
                    .build();
            versions.put(getKey(sv.getClassifier(), sv.getExtension()), sv);
        }

        Versioning versioning = recessive.getVersioning();
        if (versioning != null) {

        this.type = Strings.nullToEmpty(type);
    }

    @Override
    public String getExtension() {
        return extension != null ? extension : getDefaultExtension();
    }

    protected abstract String getDefaultExtension();

    @Override
    public void setExtension(String extension) {
        this.extension = Strings.nullToEmpty(extension);
    }

    @Nullable
    @Override

     * but sometimes this is not the case. For example for an ivy XML module descriptor, the type is
     * ivy and the extension is xml.
     *
     * @see #getExtension()
     */
    String getType();

    /**
     * Returns the extension of this artifact. Often the extension is the same as the type,

        given:
        MavenArtifact artifact1 = Stub() {
            getExtension() >> "ext1"
            getClassifier() >> "classified"
            getFile() >> testDir.createFile('artifact1')
        }
        MavenArtifact artifact2 = Stub() {
            getExtension() >> "ext1"
            getClassifier() >> "classified"
            getFile() >> testDir.createFile('artifact2')

                        isAny(relocation.target.getClassifier()) ? null : relocation.target.getClassifier(),
                        isAny(relocation.target.getExtension()) ? null : relocation.target.getExtension(),
                        isAny(relocation.target.getVersion()) ? null : relocation.target.getVersion(),
                        relocation.global ? "User global relocation" : "User project relocation");