}

    /** {@inheritDoc} */
    public String getClassifier() {
        return artifact.getClassifier();
    }

    /** {@inheritDoc} */
    public boolean hasClassifier() {
        return artifact.hasClassifier();
    }

    /** {@inheritDoc} */
    public void setFile(File destination) {
        artifact.setFile(destination);
        project.getArtifact().setFile(destination);
    }

        return (value == null) || (value.trim().length() < 1);
    }

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

    @Override
    public boolean hasClassifier() {
        return classifier != null && !classifier.isEmpty();
    }

    @Override
    public String getScope() {
        return scope;
    }

    @Override
    public String getGroupId() {

        StringBuilder path = new StringBuilder(128);

        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(artifact.getBaseVersion()).append(PATH_SEPARATOR);
        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()) {

    String getArtifactId();

    String getVersion();

    void setVersion(String version);

    String getScope();

    String getType();

    String getClassifier();

    boolean hasClassifier();

    File getFile();

    void setFile(File destination);

    String getBaseVersion();

    void setBaseVersion(String baseVersion);

    String getId();

        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.
         */