untar.setDest(target)

        if (file.name.endsWith(".tgz")) {
            def method = new Untar.UntarCompressionMethod()
            method.value = "gzip"
            untar.compression = method
        } else if (file.name.endsWith(".tbz2")) {
            def method = new Untar.UntarCompressionMethod()
            method.value = "bzip2"
            untar.compression = method
        }