List<ModelProblem> modelProblems = null;
                Throwable error = null;

                if (project == null) {
                    project = new MavenProject();
                    project.setFile(pomFile != null ? pomFile.toFile() : null);

                    ModelBuildingListener listener =
                            new DefaultModelBuildingListener(project, projectBuildingHelper, this.request);

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        SearchResponse response = option.apply(client.prepareSearch(index).setScroll(scrollForUpdate).setSize(sizeForUpdate)
                .setPreference(Constants.SEARCH_PREFERENCE_LOCAL)).execute().actionGet(fessConfig.getIndexScrollSearchTimeout());

        int count = 0;
        String scrollId = response.getScrollId();

        this.parent = parent;
    }

    public boolean hasParent() {
        return getParent() != null;
    }

    public File getFile() {
        return file;
    }

    public void setFile(File file) {
        this.file = file;
        this.basedir = file != null ? file.getParentFile() : null;
    }

    /**
     * Sets project {@code file} without changing project {@code basedir}.
     *

            stream(parameter.getSuggestFields()).of(stream -> stream.forEach(builder::addField));
            roleQueryHelper.build(SearchRequestType.SUGGEST).stream().forEach(builder::addRole);
            builder.setSize(parameter.getNum());
            stream(langs).of(stream -> stream.forEach(builder::addLang));

            stream(parameter.getTags()).of(stream -> stream.forEach(builder::addTag));