}

            if (!plugin.isExtensions()
                    && artifacts.size() == 1
                    && artifacts.get(0).getFile() != null) {
                /*
                 * This is purely for backward-compat with 2.x where <extensions> consisting of a single artifact where

            ArtifactRepository repository) {
        if (metadata != null && metadata.getFile() != null && metadata.getFile().isFile()) {
            try {
                Map<String, ?> options = Collections.singletonMap(MetadataReader.IS_STRICT, Boolean.FALSE);

                Metadata repoMetadata = metadataReader.read(metadata.getFile(), options);

                mergeMetadata(versions, repoMetadata, repository);

    @Override
    public String getType() {
        return type;
    }

    @Override
    public void setFile(File file) {
        this.file = file;
    }

    @Override
    public File getFile() {
        return file;
    }

    @Override
    public ArtifactRepository getRepository() {
        return repository;
    }

    @Override

        if (request.getPom() == null) {
            return projects;
        }

        MavenProject requestPomProject = projects.stream()
                .filter(project -> request.getPom().equals(project.getFile()))
                .findFirst()
                .orElseThrow(() -> new MavenExecutionException(
                        "Could not find a project in reactor matching the request POM", request.getPom()));

                .orElse(null);
        if (artifact instanceof DefaultArtifact) {
            org.eclipse.aether.artifact.Artifact a = ((DefaultArtifact) artifact).getArtifact();
            if (Objects.equals(file, a.getFile())) {
                return a;
            }
        }
        return new org.eclipse.aether.artifact.DefaultArtifact(
                artifact.getGroupId(),
                artifact.getArtifactId(),