import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.eclipse.aether.graph.DependencyFilter;

/**
 * Caches project class realms. <strong>Warning:</strong> This is an internal utility interface that is only public for
 * technical reasons, it is not part of the public API. In particular, this interface can be changed or deleted without
 * prior notice.
 *
 */
public interface ProjectRealmCache {

    /**

            List<ArtifactRepository> remoteRepositories,
            ArtifactRepository localRepository,
            boolean allowStubModel)
            throws ProjectBuildingException;

    // TODO this is only to provide a project for plugins that don't need a project to execute but need some
    // of the values from a MavenProject. Ideally this should be something internal and nothing outside Maven

        // The exception stack trace is not really interesting here
        // but the message itself may be quite details and span multiple
        // lines with errors in it, so only display it at debug level.
        String msg = "The POM for {} is invalid, transitive dependencies (if any) will not be available: {}";
        if (logger.isDebugEnabled()) {

    /**
     * Default ctor for Plexus compatibility, as many plugins have artifact handlers declared in legacy Plexus XML.
     * Do not use directly!
     *
     * @deprecated This ctor is present only for Plexus XML defined component compatibility, do not use it.
     */
    @Deprecated
    public DefaultArtifactHandler() {
        this.type = null;
    }

    public DefaultArtifactHandler(final String type) {

     */
    ArtifactFilter getArtifactFilter();

    /**
     * Returns a filter for only the core artifacts.
     *
     * @return the artifact filter
     */
    ArtifactFilter getCoreArtifactFilter();

    /**
     * Exclude an extension artifact (doesn't affect getArtifactFilter's result, only getExtensionArtifactFilter).
     *
     * @param artifactId an artifact id

                DependencyScope.NONE.id(), DependencyScope.NONE.isTransitive(), Collections.emptySet()));
        result.add(internalScopeManager.createDependencyScope(
                DependencyScope.COMPILE_ONLY.id(),
                DependencyScope.COMPILE_ONLY.isTransitive(),
                singleton(CommonBuilds.PROJECT_PATH_MAIN, CommonBuilds.BUILD_PATH_COMPILE)));
        result.add(internalScopeManager.createDependencyScope(

       declaration is required.

   - [name] tells maven what the user-friendly name of this project is. The name
       element is similar to artifactId in that it is a unique descriptor for

     * Merge a new metadata set into this piece of metadata.
     * TODO this should only be needed on the repository metadata {@link org.apache.maven.artifact.metadata.ArtifactMetadata}
     *
     * @param metadata the new metadata
     */
    void merge(ArtifactMetadata metadata);

    /**
     * Store the metadata in the local repository.

        return predGroupId.and(predArtifactId);
    }

    /**
     * In order to reuse the glob matcher from the filesystem, we need
     * to create Path instances.  Those are only used with the toString method.
     * This hack works because the only system-dependent thing is the path
     * separator which should not be part of the groupId or artifactId.
     */
    private static Path createPathProxy(String value) {

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