this.jarDirectories = jarDirectories;
    }

    /**
     * A set of Jar files or directories containing Javadoc.
     */
    public Set<Path> getJavadoc() {
        return javadoc;
    }

    public void setJavadoc(Set<Path> javadoc) {
        this.javadoc = javadoc;
    }

    /**
     * A set of Jar files or directories containing source code.
     */
    public Set<Path> getSources() {

            task.from(extension.getDslReference().getRenderedDocumentation(), sub -> sub.into("dsl"));

            // Javadocs reference goes into javadoc/
            task.from(extension.getJavadocs().getRenderedDocumentation(), sub -> sub.into("javadoc"));

            // Dokka Kotlin DSL reference goes into kotlin-dsl/

            task.setGroup("documentation");
            task.setDescription("Generate Javadocs for all API classes");

            task.setTitle("Gradle API " + version);

            Javadocs javadocs = extension.getJavadocs();

            // TODO: This should be part of Javadoc task
            task.getInputs().file(javadocs.getJavadocCss())
                .withPropertyName("stylesheetFile")