ArtifactScopeEnum scope;

    // ------------------------------------------------------------------------
    /**
     * init graph
     */
    public MetadataGraph(int nVertices) {
        init(nVertices, 2 * nVertices);
    }

    public MetadataGraph(int nVertices, int nEdges) {
        init(nVertices, nEdges);
    }
    // ------------------------------------------------------------------------
    /**

 * property {@code maven.ext.class.path} on the command line. As soon as dependency injection is set up, Maven
 * looks up all implementers of this interface and calls their {@link #init(Context)} method. Note:
 * Implementors are strongly advised to inherit from {@link AbstractEventSpy} instead of directly implementing this
 * interface.
 * @since 3.0.2
 */
public interface EventSpy {
    /**

        }
        return new EventSpyRepositoryListener(this, listener);
    }

    public void init(EventSpy.Context context) {
        if (eventSpies.isEmpty()) {
            return;
        }
        for (EventSpy eventSpy : eventSpies) {
            try {
                eventSpy.init(context);
            } catch (Exception | LinkageError e) {
                logError("initialize", e, eventSpy);
            }

package org.apache.maven.eventspy;

/**
 * A skeleton eventspy that does nothing other than helping implementors.
 * @since 3.0.2
 */
public abstract class AbstractEventSpy implements EventSpy {

    public void init(Context context) throws Exception {}

    public void onEvent(Object event) throws Exception {}

    public void close() throws Exception {}

        context.setValue(expression, value);
    }

    /*
    public int containerCountForUri( String uri )
        throws IOException
    {
        Validate.notEmpty( uri, "uri can neither be null nor empty " );
        ModelDataSource source = new DefaultModelDataSource();
        source.init( domainModel.getModelProperties(), null );
        return source.queryFor( uri ).size();
    }
    */

        private final Lookup lookup;

        @Inject
        ReactorReaderSpy(Lookup lookup) {
            this.lookup = lookup;
        }

        @Override
        public void init(Context context) throws Exception {}

        @Override
        @SuppressWarnings("checkstyle:MissingSwitchDefault")
        public void onEvent(Object event) throws Exception {

                error);
    }

    public ArtifactMetadata(Artifact af) {
        /*
        if ( af != null )
        {
            init( af );
        }
        */
    }
    // ------------------------------------------------------------------
    //    public void init( ArtifactMetadata af )
    //    {
    //        setGroupId( af.getGroupId() );
    //        setArtifactId( af.getArtifactId() );

    private DefaultSessionFactory sessionFactory;

    @Inject
    EventSpyImpl(DefaultSessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    @Override
    public void init(Context context) throws Exception {}

    @Override
    public void onEvent(Object arg) throws Exception {
        if (arg instanceof ExecutionEvent) {
            ExecutionEvent ee = (ExecutionEvent) arg;

    }

    public InputLocation(int lineNumber, int columnNumber) {
        this(lineNumber, columnNumber, null, null);
    }

    public InputLocation(int lineNumber, int columnNumber, InputSource source) {
        this(lineNumber, columnNumber, source, null);
    }

    public InputLocation(int lineNumber, int columnNumber, InputSource source, Object selfLocationKey) {

            private final Collection<Artifact> artifacts;
            private final int retryFailedDeploymentCount;

            DefaultArtifactDeployerRequest(
                    @Nonnull Session session,
                    @Nonnull RemoteRepository repository,
                    @Nonnull Collection<Artifact> artifacts,
                    int retryFailedDeploymentCount) {
                super(session);