// move on to next in r1
                    if (i1.hasNext()) {
                        res1 = i1.next();
                    } else {
                        done = true;
                    }
                }
            } else {
                // move on to next in r2
                if (i2.hasNext()) {
                    res2 = i2.next();
                } else {

        printErrors(result);

        Iterator<Artifact> i = result.getArtifacts().iterator();
        assertEquals(n, i.next(), "n should be first");
        assertEquals(m, i.next(), "m should be second");

        // inverse order
        set = new LinkedHashSet<>();
        set.add(m);
        set.add(n);

                        for (Object next : feedback) {
                            if (next instanceof Throwable) {
                                if (last == null) {
                                    logger.debug("", ((Throwable) next));
                                } else {
                                    logger.debug(String.valueOf(last), ((Throwable) next));
                                }

        if (r1.size() != r2.size()) {
            return false;
        }

        for (Iterator<ArtifactRepository> it1 = r1.iterator(), it2 = r2.iterator(); it1.hasNext(); ) {
            if (!repositoryEquals(it1.next(), it2.next())) {
                return false;
            }
        }

        return true;
    }

    /**
     * CacheRecord
     */
    public class CacheRecord {

        INLINE, // inline, each "internal" problem one line next to mojo invocation
        SUMMARY, // at end, list of plugin GAVs along with ANY validation issues
        BRIEF, // each "internal" problem one line next to mojo invocation
        // and at end list of plugin GAVs along with "external" issues

        Iterator<RemoteRepository> iterator = repositories.iterator();
        while (iterator.hasNext()) {
            RemoteRepository next = iterator.next();
            if (next.getId().equals(id)) {
                iterator.remove();
            }
        }
    }

    public ModelResolver newCopy() {
        return new ProjectModelResolver(this);
    }

        assertNotNull(depResults);
        assertEquals(1, depResults.size());
        assertEquals(
                exec.getPlugin().getArtifact().key(),
                depResults.iterator().next().key(),
                "dependency artifact is wrong.");
    }

    @Test
    public void testPluginArtifactMapExpressionReference() throws Exception {
        Session session = newSession();

    public void close() {
        printer.waitUntilRunning(false);
        System.setOut(this.originalSystemOUtStream);
    }

    private void setNext() {
        currentBuild = projects.hasNext() ? projects.next() : null;
    }

    private boolean ownsRealOutputStream(ProjectSegment projectBuild) {
        return projectBuild.equals(currentBuild);
    }

    private PrintStream getThreadBoundPrintStream() {

                        for (Iterator<ConflictResolver> j = conflictResolvers.iterator();
                                resolved == null && j.hasNext(); ) {
                            ConflictResolver conflictResolver = j.next();

                            resolved = conflictResolver.resolveConflict(previous, node);
                        }

                        if (resolved == null) {

        if (graphResult.hasErrors()) {
            return addExceptionToResult(
                    result, graphResult.getProblems().iterator().next().getException());
        }

        try {
            session.setProjectMap(getProjectMap(session.getProjects()));
        } catch (DuplicateProjectException e) {
            return addExceptionToResult(result, e);