}

    public JvmSourceFile getClassFile() {
        return new JvmSourceFile(path, name.replaceAll("(\\.java|\\.scala)", ".class"), null);
    }

    public TestFile writeToDir(TestFile base) {
        TestFile file = base.file(path, name);
        writeToFile(file);
        return file;
    }

    public void writeToFile(TestFile file) {
        if (file.exists()) {

     */
    public void writeToProject(TestFile projectDir) {
        TestFile srcDir = projectDir.file("src/" + getSourceSetName());
        for (SourceFile sourceFile : getFiles()) {
            sourceFile.writeToDir(srcDir);
        }
    }

    /**
     * Writes the source files of this element to the given source directory.
     */
    public void writeToSourceDir(TestFile sourceDir) {

    }

    @ToBeFixedForConfigurationCache
    def "can manually define C++ source sets"() {
        given:
        helloWorldApp.library.headerFiles.each { it.writeToDir(file("src/shared")) }

        file("src/main/cpp/main.cpp") << helloWorldApp.mainSource.content
        file("src/main/cpp2/hello.cpp") << helloWorldApp.librarySources[0].content

    }

    @ToBeFixedForConfigurationCache
    def "can manually define C source sets"() {
        given:
        helloWorldApp.library.headerFiles.each { it.writeToDir(file("src/shared")) }

        file("src/main/c/main.c") << helloWorldApp.mainSource.content
        file("src/main/c2/hello.c") << helloWorldApp.librarySources[0].content