JarFile(jar, false).use { jarFile ->
        jarFile.entries().asSequence().filter {
            isGradlePluginPropertiesFile(it)
        }.map { pluginEntry ->
            val pluginProperties = jarFile.getInputStream(pluginEntry).use { Properties().apply { load(it) } }
            val id = pluginEntry.name.substringAfterLast("/").substringBeforeLast(".properties")

        }

    private
    fun jarClassBytesIndexFor(jar: File): ClassBytesIndex = { classFilePath ->
        openJarFile(jar).run {
            getJarEntry(classFilePath)?.let { jarEntry ->
                { getInputStream(jarEntry).use { jarInput -> jarInput.readBytes() } }
            }
        }
    }

    private
    fun directoryClassBytesIndexFor(dir: File): ClassBytesIndex = { classFilePath ->

        try {
            Process process = new ProcessBuilder().command(args).start();
            CountDownLatch latch = new CountDownLatch(2);
            ByteArrayOutputStream stdout = connectStream(process.getInputStream(), latch);
            ByteArrayOutputStream stderr = connectStream(process.getErrorStream(), latch);

            process.waitFor(1, TimeUnit.MINUTES);
            latch.await(1, TimeUnit.MINUTES);