}

        return sequenceOf(directory)
    }

    private
    fun aJar(sourceFiles: Sequence<Path>): Sequence<Path> {
        val outputPath = projectDir.resolve("mylib.jar")
        Files.newOutputStream(outputPath).use { outputStream ->
            JarOutputStream(outputStream).use { jarStream ->
                sourceFiles.forEach { dir ->
                    check(Files.isDirectory(dir)) { "Must be a directory" }

    @Input
    abstract Property<String> getVersion();

    @TaskAction
    def transform() {
        XIncludeAwareXmlProvider provider = new XIncludeAwareXmlProvider()
        provider.parse(sourceFile.get().asFile)
        transformImpl(provider.document)
        provider.write(destFile.get().asFile)
    }

    private def transformImpl(Document doc) {
        use(BuildableDOMCategory) {

 * <ul>
 * <li>Meta-data extracted from the source by {@link gradlebuild.docs.dsl.source.ExtractDslMetaDataTask}.</li>
 * <li>Meta-data about the plugins, in the form of an XML file.</li>
 * <li>{@code sourceFile} - A main docbook template file containing the introductory material and a list of classes to document.</li>

declarations that declare packages whose contents it wishes to use,
followed by a possibly empty set of declarations of functions,
types, variables, and constants.
</p>

<pre class="ebnf">
SourceFile       = PackageClause ";" { ImportDecl ";" } { TopLevelDecl ";" } .
</pre>

<h3 id="Package_clause">Package clause</h3>

<p>
A package clause begins each source file and defines the package

declarations that declare packages whose contents it wishes to use,
followed by a possibly empty set of declarations of functions,
types, variables, and constants.
</p>

<pre class="ebnf">
SourceFile       = PackageClause ";" { ImportDecl ";" } { TopLevelDecl ";" } .
</pre>

<h3 id="Package_clause">Package clause</h3>

<p>
A package clause begins each source file and defines the package