private final Object root;

        /**
         * Construct a new value source, using the supplied object as the root from
         * which to start, and using expressions split at the dot ('.') to navigate
         * the object graph beneath this root.
         * @param root the root of the graph.
         */
        public ObjectBasedValueSource(Object root) {

            "0"
        };

        checkVersionsArrayEqual(arr);
    }

    /**
     * Test <a href="https://issues.apache.org/jira/browse/MNG-6964">MNG-6964</a> edge cases
     * for qualifiers that start with "-0.", which was showing A == C and B == C but A &lt; B.
     */
    @Test
    void testMng6964() {
        String a = "1-0.alpha";
        String b = "1-0.beta";
        String c = "1";

        this.originalSystemOUtStream = originalSystemOut;
        System.setOut(new ThreadBoundPrintStream(this.originalSystemOUtStream));
        printer = new ConsolePrinter(segmentChunks);
        new Thread(printer).start();
        printer.waitUntilRunning(true);
    }

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

    // instances, which may change dependencies which can, in turn, affect the build order.
    //
    // 11) Execute LifecycleStarter.start()
    //
    @SuppressWarnings("checkstyle:methodlength")
    private MavenExecutionResult doExecute(MavenExecutionRequest request) {
        request.setStartTime(new Date());

            return stringPart.toString() + digitPart.toString();
        }
    }

    /**
     * Represents a version list item. This class is used both for the global item list and for sub-lists (which start
     * with '-(number)' in the version specification).
     */
    private static class ListItem extends ArrayList<Item> implements Item {
        @Override
        public int getType() {

            @Override
            public void run() {
                artifactsResultInAnotherThread.set(project.getArtifacts().size());
            }
        });
        t.start();
        t.join();
        assertEquals(project.getArtifacts().size(), artifactsResultInAnotherThread.get());
    }

    @Test
    void testDontResolveDependencies() throws Exception {

        return model;
    }

    /**
     * Interpolates all expressions in the src parameter.
     * <p>
     * The algorithm used for each expression is:
     * <ul>
     *   <li>If it starts with either "pom." or "project.", the expression is evaluated against the model.</li>
     *   <li>If the value is null, get the value from the context.</li>

    /**
     * @deprecated use {@link #getTopDirectory()} instead
     */
    @Deprecated
    String getBaseDirectory();

    // Timing (remove this)
    MavenExecutionRequest setStartTime(Date start);

    Date getStartTime();

    // Goals
    MavenExecutionRequest setGoals(List<String> goals);

    List<String> getGoals();

    // Properties

    /**