@Override
    public CacheRecord get(Key key) throws PluginResolutionException {
        CacheRecord cacheRecord = cache.get(key);

        if (cacheRecord != null && cacheRecord.getException() != null) {
            throw cacheRecord.getException();
        }

        return cacheRecord;
    }

    @Override
    public CacheRecord put(Key key, List<Artifact> pluginArtifacts) {

    @Override
    public CacheRecord get(Key key) throws LifecycleExecutionException {
        CacheRecord cacheRecord = cache.get(key);
        if (cacheRecord != null && cacheRecord.getException() != null) {
            throw cacheRecord.getException();
        }
        return cacheRecord;
    }

    @Override
    public CacheRecord put(Key key, Set<Artifact> projectArtifacts) {

        assertEquals("", summary.getReference());
        assertEquals(0, summary.getChildren().size());
        assertEquals(boom1, summary.getException());
    }

        this.reference = (reference != null) ? reference : "";
        this.children = (children != null) ? Collections.unmodifiableList(children) : Collections.emptyList();
    }

    public Throwable getException() {
        return exception;
    }

    public String getMessage() {
        return message;
    }

    public String getReference() {
        return reference;
    }

        return session.getCurrentProject();
    }

    @Override
    public MojoExecution getMojoExecution() {
        return mojoExecution;
    }

    @Override
    public Exception getException() {
        return exception;
    }

    Optional<MojoExecution> getMojoExecution();

    /**
     * Gets the exception that caused the event (if any).
     *
     * @return the exception or {@code empty()} if none
     */
    Optional<Exception> getException();

            this.exception = exception;
        }

        public Set<Artifact> getArtifacts() {
            return artifacts;
        }

        public LifecycleExecutionException getException() {
            return exception;
        }
    }

    Key createKey(
            MavenProject project,
            Collection<String> scopesToCollect,
            Collection<String> scopesToResolve,

                        "Could not find artifact org.apache.maven.its:dep-mng5459:pom:0.4.0-20130404.090532-2 in repo ("
                                + newTestRepository().getUrl() + ")",
                        evt.getException().getMessage());
                missingArtifactDescriptor = true;
            }
        }

        assertTrue(
                missingArtifactDescriptor,

    class CacheRecord {

        private final List<Artifact> artifacts;

        public List<Artifact> getArtifacts() {
            return artifacts;
        }

        public PluginResolutionException getException() {
            return exception;
        }

        private final PluginResolutionException exception;

        public CacheRecord(List<Artifact> artifacts) {
            this.artifacts = artifacts;

    public void transferCorrupted(TransferEvent event) throws TransferCancelledException {
        TransferResource resource = event.getResource();
        out.warn(
                "{} from {} for {}{}",
                event.getException().getMessage(),
                resource.getRepositoryId(),
                resource.getRepositoryUrl(),
                resource.getResourceName());
    }

    @Override