*/
    @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 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());