if (artifacts != null && !artifacts.isEmpty()) {
            boolean v4api = foreignImports != null && foreignImports.containsValue(maven4ApiRealm);
            for (Artifact artifact : artifacts) {
                if (!isProvidedArtifact(artifact, v4api) && artifact.getFile() != null) {
                    constituents.add(new ArtifactClassRealmConstituent(artifact));

    private boolean requiresReports = false;

    /**
     * By default, mojos are not threadsafe
     * @since 3.0-beta-2
     */
    private boolean threadSafe = false;

    private boolean v4Api = false;

    /**
     * Default constructor.
     */
    public MojoDescriptor() {
        this.parameters = new ArrayList<>();
        setInstantiationStrategy(DEFAULT_INSTANTIATION_STRATEGY);

            pluginDescriptor.setArtifacts(pluginArtifacts);
        } else {
            boolean v4api = pluginDescriptor.getMojos().stream().anyMatch(MojoDescriptor::isV4Api);
            Map<String, ClassLoader> foreignImports = calcImports(project, parent, imports, v4api);

            PluginRealmCache.Key cacheKey = pluginRealmCache.createKey(
                    plugin,
                    parent,

            session.
            @since Maven 3.0.
          </description>
          <defaultValue>false</defaultValue>
        </field>
        <field>
          <name>v4Api</name>
          <version>1.1.0</version>
          <type>boolean</type>