*/
    @Classpath
    public FileCollection getPmdClasspath() {
        return pmdClasspath;
    }

    /**
     * The class path containing the PMD library to be used.
     */
    public void setPmdClasspath(FileCollection pmdClasspath) {
        this.pmdClasspath = pmdClasspath;
    }

    /**

        assert task instanceof Pmd
        task.with {
            assert description == "Run PMD analysis for ${sourceSet.name} classes"
            source as List == sourceSet.allJava as List
            assert pmdClasspath == project.configurations.pmd
            assert ruleSets == ["category/java/errorprone.xml"]
            assert ruleSetConfig == null
            assert ruleSetFiles.empty

    private final PmdActionParameters parameters

    PmdInvoker(PmdActionParameters parameters) {
        this.parameters = parameters
    }

    void execute(AntBuilderDelegate ant) {
        FileCollection pmdClasspath = parameters.getPmdClasspath().filter(new FileExistFilter())

        // PMD uses java.class.path to determine it's implementation classpath for incremental analysis

                <tr>
                    <td>Name</td>
                    <td>Default with <literal>pmd</literal> plugin</td>
                </tr>
            </thead>
            <tr>
                <td>pmdClasspath</td>
                <td><literal>project.configurations.pmd</literal></td>
            </tr>
            <tr>
                <td>ruleSets</td>
                <td><literal>project.pmd.ruleSets</literal></td>

            FileCollection pmdFileCollection = configuration

            tasks.register("myPmd", Pmd) {
                maxFailures = 0
                source = fileTree("\$projectDir/src/main")
                pmdClasspath = pmdFileCollection
                ruleSetFiles = files()
                ruleSets = ["category/java/errorprone.xml"]
                rulesMinimumPriority = 5
                targetJdk = TargetJdk.VERSION_1_4

        );
    }

    private void configureTaskConventionMapping(Configuration configuration, final Pmd task) {
        ConventionMapping taskMapping = task.getConventionMapping();
        taskMapping.map("pmdClasspath", () -> configuration);
        taskMapping.map("ruleSets", () -> extension.getRuleSets());
        taskMapping.map("ruleSetConfig", () -> extension.getRuleSetConfig());