this.classfileBackupDir = classfileBackupDir;
    }

    public Iterable<File> getScalaClasspath() {
        return scalaClasspath;
    }

    public void setScalaClasspath(Iterable<File> scalaClasspath) {
        this.scalaClasspath = scalaClasspath;
    }

    public Iterable<File> getZincClasspath() {
        return zincClasspath;
    }

    /**
     * Returns the classpath to use to load the Scala compiler.
     */
    @Classpath
    public FileCollection getScalaClasspath() {
        return scalaClasspath;
    }

    public void setScalaClasspath(FileCollection scalaClasspath) {
        this.scalaClasspath = scalaClasspath;
    }

    /**
     * Returns the Scala compiler plugins to use.
     *
     * @since 6.4
     */
    @Classpath

    /**
     * Returns the classpath to use to load the ScalaDoc tool.
     */
    @Classpath
    public FileCollection getScalaClasspath() {
        return scalaClasspath;
    }

    public void setScalaClasspath(FileCollection scalaClasspath) {
        this.scalaClasspath = scalaClasspath;
    }

    /**
     * Returns the ScalaDoc generation options.
     */
    @Nested