// the first exception is added as cause, all other ones as suppressed exceptions
            prerequisiteExceptions.stream().skip(1).forEach(pie::addSuppressed);
            throw pie;
        }
    }

    @Override
    @Deprecated
    public void checkRequiredMavenVersion(PluginDescriptor pluginDescriptor) throws PluginIncompatibleException {
        checkPrerequisites(pluginDescriptor);
    }

            <!-- This step is required to generate xdoc, and does not generate java code -->
            <id>modello-site-doc</id>
            <goals>
              <goal>xdoc</goal>
            </goals>
            <phase>pre-site</phase>
            <configuration>
              <version>1.0.0</version>
              <models>
                <model>src/main/mdo/extension.mdo</model>
              </models>
            </configuration>

     * <pre>
     * a:1.0
     * a:2.0
     * </pre>
     */
    @Test
    void testEqual() {
        ResolutionNode a1n = createResolutionNode(a1);
        ResolutionNode a2n = createResolutionNode(a2);

        assertResolveConflict(a1n, a1n, a2n);
    }

    /**
     * Tests that <code>a:1.0</code> wins in the scenario:
     * <pre>
     * a:2.0
     * a:1.0
     * </pre>

        // The point being that they do not really have to match the "real" stuff,
        List<String> stubCleanCycle = Arrays.asList(PRE_CLEAN.getPhase(), CLEAN.getPhase(), POST_CLEAN.getPhase());

        List<String> stubSiteCycle =
                Arrays.asList(PRE_SITE.getPhase(), SITE.getPhase(), POST_SITE.getPhase(), SITE_DEPLOY.getPhase());

        List<String> stubWrapperCycle = Arrays.asList(WRAPPER.getPhase());

             * plugins that require dependency resolution although they usually run in phases of the build where project
             * artifacts haven't been assembled yet. The prime example of this is "mvn release:prepare".
             */
            if (aggregating && areAllDependenciesInReactor(session.getProjects(), result.getUnresolvedDependencies())) {

     * <pre>
     * a:1.0
     * a:2.0
     * </pre>
     */
    @Test
    void testEqual() {
        ResolutionNode a1n = createResolutionNode(a1);
        ResolutionNode a2n = createResolutionNode(a2);

        assertResolveConflict(a1n, a1n, a2n);
    }

    /**
     * Tests that <code>a:2.0</code> wins in the scenario:
     * <pre>
     * a:2.0
     * a:1.0
     * </pre>

        public String id() {
            return Lifecycle.CLEAN;
        }

        @Override
        public Collection<Phase> phases() {
            return asList(
                    phase("pre-clean"),
                    phase(
                            "clean",
                            plugin(
                                    "org.apache.maven.plugins:maven-clean-plugin:" + MAVEN_CLEAN_PLUGIN_VERSION

                for (Map.Entry<Object, Plugin> entry : master.entrySet()) {
                    List<Plugin> pre = predecessors.get(entry.getKey());
                    if (pre != null) {
                        result.addAll(pre);
                    }
                    result.add(entry.getValue());
                }
                result.addAll(pending);