ClassLoader previous = Thread.currentThread().getContextClassLoader();
if (useAutoCompile()) {
CompilationManager compilationManager = Apps.with(appSettings).newAppCompilationManager(
new EventBus(), CompilationManager.DEFAULT_SETTINGS);
compilationManager.incrementalCompile();
Thread.currentThread().setContextClassLoader(
compilationManager.newHotReloadingClassLoader(
appSettings.appPackage().get(), ImmutableSet.<Class>of()));
}