for (Facet facet : facets) {
            facet.appendNode(xml);
        }
    }

    @Override
    protected String getDefaultResourceName() {
        return "defaultWtpFacet.xml";
    }

    public void configure(List<Facet> facets) {
        this.facets.addAll(facets);
        removeDuplicates();
    }

    private void removeDuplicates() {

     */
    public List<Facet> getFacets() {
        return facets;
    }

    public void setFacets(List<Facet> facets) {
        this.facets = facets;
    }

    /**
     * Adds a facet.
     * <p>
     * If a facet already exists with the given name then its version will be updated.
     * <p>
     * In the case of a "jst.ejb" facet, it will also be added as a fixed facet.
     * <p>

        classpath.lib('hamcrest-core-1.3.jar').assertIsExcludedFromDeployment()

        // Facets
        def facets = wtpFacets
        facets.assertHasFixedFacets("jst.java")
        facets.assertHasInstalledFacets("jst.utility", "jst.java")
        facets.assertFacetVersion("jst.utility", "1.0")
        facets.assertFacetVersion("jst.java", "6.0")

        // Component
        def component = wtpComponent

        project.assertHasNatures()
        project.assertHasBuilders()

        // Classpath
        !testDirectory.file('.classpath').exists()

        // Facets
        def facets = wtpFacets
        facets.assertHasFixedFacets()
        facets.assertHasInstalledFacets()

        // Component
        def component = wtpComponent
        component.deployName == 'empty'
        component.resources.isEmpty()

    }

    void assertHasFixedFacets(String... facets) {
        assert this.facets.fixed*.@facet == facets as List
    }

    void assertHasInstalledFacets(String... facets) {
        assert this.facets.installed*.@facet == facets as List
    }

    void assertFacetVersion(String facet, String version) {
        def facetNode = this.facets.installed.find { it.@facet == facet }
        assert facetNode != null

        classpath.lib('hamcrest-core-1.3.jar').assertIsExcludedFromDeployment()

        // Facets
        def facets = wtpFacets
        facets.assertHasFixedFacets("jst.java", "jst.web")
        facets.assertHasInstalledFacets("jst.web", "jst.java")
        facets.assertFacetVersion("jst.web", "2.4")
        facets.assertFacetVersion("jst.java", "6.0")

        // Component
        def component = wtpComponent

        checkEclipseWtpFacet([
                new Facet(FacetType.fixed, "jst.java", null),
                new Facet(FacetType.fixed, "jst.web", null),
                new Facet(FacetType.installed, "jst.web", "2.4"),
                new Facet(FacetType.installed, "jst.java", "1.8")])
    }

    def "can add custom facets to war default facets"() {
        when:
        project.apply(plugin: 'war')

                    <td>Default with <literal>eclipse</literal> and <literal>war</literal> plugins</td>
                </tr>
            </thead>
            <tr>
                <td>facets</td>
                <td>Java and web facets.</td>
            </tr>
            <tr>
                <td>file</td>
                <td/>
            </tr>
        </table>
    </section>
    <section>

        project.assertHasJavaFacetBuilders()

        // Classpath
        testDirectory.file('.classpath').exists()

        // Facets
        def facets = wtpFacets
        facets.assertHasFixedFacets('jst.ear')
        facets.assertHasInstalledFacets('jst.ear')
        facets.assertFacetVersion('jst.ear', '5.0')

        // Component
        def component = wtpComponent
        component.deployName == 'ear'

        when:
        facet.load(customFacetReader)
        facet.configure(constructorFacets + [CUSTOM_FACETS[0]])

        then:
        facet.facets == CUSTOM_FACETS + constructorFacets
    }

    def "load defaults"() {
        when:
        facet.loadDefaults()

        then:
        facet.xml != null
        facet.facets == []
    }

    def "roundtripping the facet file leaves it unchanged"() {