requests.add(new MetadataRequest(metadata, repository, REPOSITORY_CONTEXT).setTrace(trace));
            }
        }

        // initial try, use locally cached metadata

        List<MetadataResult> results = repositorySystem.resolveMetadata(request.getRepositorySession(), requests);
        requests.clear();

 * is typically also used for tests.
 */
class PathModularizationCache {
    /**
     * Module information for each JAR file or output directories.
     * Cached when first requested to avoid decoding the module descriptors multiple times.
     *
     * @see #getModuleInfo(Path)
     */
    private final Map<Path, PathModularization> moduleInfo;

    /**

import org.codehaus.plexus.personality.plexus.lifecycle.phase.Disposable;
import org.eclipse.aether.graph.DependencyFilter;

/**
 * Default project realm cache implementation. Assumes cached data does not change.
 */
@Named
@Singleton
public class DefaultProjectRealmCache implements ProjectRealmCache, Disposable {
    /**
     * CacheKey
     */
    protected static class CacheKey implements Key {

import org.eclipse.aether.repository.LocalRepository;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.repository.WorkspaceRepository;

/**
 * Default PluginCache implementation. Assumes cached data does not change.
 */
@Named
@Singleton
public class DefaultPluginRealmCache implements PluginRealmCache, Disposable {
    /**
     * CacheKey
     */
    protected static class CacheKey implements Key {

        }

        ResolutionGroup cached = cache.get(
                artifact,
                request.isResolveManagedVersions(),
                request.getLocalRepository(),
                request.getRemoteRepositories());

        if (cached != null
                // if the POM has no file, we cached a missing artifact, only return the cached data if no update forced

// this here, possibly indefinitely.
//
public interface RepositoryCache {

    /**
     * Puts the specified data into the cache. <strong>Warning:</strong> The cache will directly save the provided
     * reference. If the cached data is mutable, i.e. could be modified after being put into the cache, the caller is
     * responsible for creating a copy of the original data and store the copy in the cache.
     *

     */
    @Nonnull
    Path getPathForLocalArtifact(@Nonnull Session session, @Nonnull LocalRepository local, @Nonnull Artifact artifact);

    /**
     * Gets the relative path for an artifact cached from a remote repository.
     * Note that the artifact need not actually exist yet at the returned location,
     * the path merely indicates where the artifact would eventually be stored.
     *

import org.codehaus.plexus.classworlds.realm.NoSuchRealmException;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.Disposable;

/**
 * Default extension realm cache implementation. Assumes cached data does not change.
 */
@Named
@Singleton
public class DefaultExtensionRealmCache implements ExtensionRealmCache, Disposable {
    /**
     * CacheKey
     */
    protected static class CacheKey implements Key {

        File f2 = getTestFile("src/test/resources/projects/grandchild-check/child/grandchild/pom.xml");

        getProject(f1);

        // it's the building of the grandchild project, having already cached the child project
        // (but not the parent project), which causes the problem.
        getProject(f2);
    }

    @Disabled("Maven 4 does not allow duplicate plugin declarations")
    @Test

                if (error != null) {
                    throw new TransferFailedException("Failure to resolve " + remotePath + " from "
                            + repository.getUrl()
                            + " was cached in the local repository. "
                            + "Resolution will not be reattempted until the update interval of "