assertCollectorState(0, 0, 0, collector);

        List<Resource> outResources = out.getBuild().getResources();
        Iterator<Resource> resIt = outResources.iterator();

        assertEquals(model.getBuild().getSourceDirectory(), resIt.next().getDirectory());
    }

    @Test
    public void shouldInterpolateUnprefixedBasedirExpression() throws Exception {

        public String getGroupId() {
            return groupId;
        }

        public List<Dependency> getDependencies() {
            return dependencies;
        }

        public Build getBuild() {
            return build;
        }

        public String getArtifactId() {
            return artifactId;
        }

        public String getName() {
            return name;
        }

            validateRawRepositories(
                    problems, m.getPluginRepositories(), "pluginRepositories.pluginRepository.", EMPTY, request);

            Build build = m.getBuild();
            if (build != null) {
                validate20RawPlugins(problems, build.getPlugins(), "build.plugins.plugin.", EMPTY, request);

                PluginManagement mgmt = build.getPluginManagement();

        Map<String, String> managedVersions = new HashMap<>();

        for (int i = lineage.size() - 1; i >= 0; i--) {
            Model model = lineage.get(i);
            Build build = model.getBuild();
            if (build != null) {
                for (Plugin plugin : build.getPlugins()) {
                    String key = plugin.getKey();
                    if (versions.get(key) == null) {