*
     * @see MavenProject#addAttachedArtifact(org.apache.maven.artifact.Artifact)
     * @param project project reference.
     * @param artifact artifact to add or replace.
     */
    public void attachArtifact(MavenProject project, Artifact artifact) {
        project.addAttachedArtifact(artifact);
    }

    public void addResource(

        return Collections.unmodifiableCollection(result);
    }

    @Override
    public void attachArtifact(Project project, Artifact artifact, Path path) {
        getMavenProject(project)
                .addAttachedArtifact(RepositoryUtils.toArtifact(
                        ((DefaultProject) project).getSession().toArtifact(artifact)));
        artifactManager.setPath(artifact, path);
    }

    @Override

                    : Files.createTempFile(CONSUMER_POM_CLASSIFIER + "-", ".pom");
            deferDeleteFile(consumer);

            project.addAttachedArtifact(createConsumerPomArtifact(project, consumer, session));
        } else if (project.getModel().getDelegate().isRoot()) {
            throw new IllegalStateException(

     * @deprecated Please use {@link MavenProjectHelper}
     * @throws DuplicateArtifactAttachmentException will never happen but leave it for backward compatibility
     */
    public void addAttachedArtifact(Artifact artifact) throws DuplicateArtifactAttachmentException {
        // if already there we remove it and add again
        int index = attachedArtifacts.indexOf(artifact);
        if (index >= 0) {