protected  void executeReport(Locale locale) throws MavenReportException 
{
        List descriptors = new DefaultDescriptorsExtractor().extractDescriptors(project, getLog());
        Collections.sort(descriptors, new Comparator() {
            public int compare(Object arg0, Object arg1) {
                return ((MailetMatcherDescriptor) arg0).getName().compareTo(
                        ((MailetMatcherDescriptor) arg1).getName());
            }
        });
        getLog().info("Executing Mailets/Matchers Report");
        getSink().head();
        getSink().title();
        getSink().text("Mailet and Matchers Reference");
        getSink().title_();
        getSink().head_();
        getSink().body();
        List matchers = (List) CollectionUtils.select(descriptors,
                new TypePredicate(MailetMatcherDescriptor.TYPE_MATCHER));
        List mailets = (List) CollectionUtils.select(descriptors,
                new TypePredicate(MailetMatcherDescriptor.TYPE_MAILET));
        getSink().section1();
        getSink().sectionTitle1();
        getSink().text("Mailets and Matchers Reference");
        getSink().sectionTitle1_();
        getSink().section1_();
        if (matchers.size()  > 0 && mailets.size()  > 0) {
            getSink().table();
            getSink().tableRow();
            getSink().tableCell();
        }
        if (matchers.size()  > 0) {
            outputDescriptorIndex(matchers, "Matchers");
        }
        if (matchers.size()  > 0 && mailets.size()  > 0) {
            getSink().tableCell_();
            getSink().tableCell();
        }
        if (mailets.size()  > 0) {
            outputDescriptorIndex(mailets, "Mailets");
        }
        if (matchers.size()  > 0 && mailets.size()  > 0) {
            getSink().tableCell_();
            getSink().tableRow_();
            getSink().table_();
        }
        if (matchers.size()  > 0) {
            outputDescriptorList(matchers, "Matchers");
        }
        if (mailets.size()  > 0) {
            outputDescriptorList(mailets, "Mailets");
        }
        getSink().body_();
        getSink().flush();
        getSink().close();
        /*
         * for (Iterator i = getProject().getCompileSourceRoots().iterator();
         * i.hasNext(); ) { String folder = (String) i.next(); DirectoryScanner
         * ds = new DirectoryScanner(); ds.setBasedir(folder);
         * ds.addDefaultExcludes(); ds.setIncludes(new
         * String[]{"**"+"/"+"*.java"}); ds.scan(); for (int k = 0; k < 
         * ds.getIncludedFiles().length; k++) { getLog().info("include:
         * "+ds.getIncludedFiles()[k]); } }
         */
}

 public String getDescription(Locale arg0) 
{
        return "Documentation about bundled mailets";
}

 public String getName(Locale arg0) 
{
        return "Mailet Reference";
}

 protected String getOutputDirectory() 
{
        return outputDirectory.getAbsolutePath();
}

 public String getOutputName() 
{
        return "mailet-report";
}

 protected MavenProject getProject() 
{
        return project;
}

 public Renderer getSiteRenderer() 
{
        return siteRenderer;
}

 public  void setProject(MavenProject project) 
{
        this.project = project;
}

For testing purpose only.

 public  void setSiteRenderer(Renderer siteRenderer) 
{
        this.siteRenderer = siteRenderer;
}