get app in legacy way

    /**
     * @param string $appName
     * @param string $context
     * @param string $tmpDir
     * @param Cache $cache
     *
     * @return \BEAR\Sunday\Extension\Application\AppInterface
     */
    public static function getModuleCachedApp($appName, $context, $tmpDir, Cache $cache = null)
    {
        $appModule = $appName . '\Module\AppModule';
        $cache = $cache ?: (function_exists('apc_fetch') ? new ApcCache : new FilesystemCache($tmpDir));
        $cacheKey = 'module-' . $appName . $context;
        $moduleProvider = function () use ($appModule, $context) {return new $appModule($context);};
        $injector = ModuleCacheInjector::create($moduleProvider, $cache, $cacheKey, $tmpDir);
        $app = $injector->getInstance('BEAR\Sunday\Extension\Application\AppInterface');

        /** $app \BEAR\Sunday\Extension\Application\AppInterface */
        return $app;
    }

    /**
     * Return cached application instance
     *
     * (experimental)
     *
     * @param string $appName
     * @param string $context
     * @param string $tmpDir
     * @param Cache $cache
     *
     * @return \BEAR\Sunday\Extension\Application\AppInterface
     */
    public static function getCachedApp($appName, $context, $tmpDir, Cache $cache = null)
    {
        $appModule = $appName . '\Module\AppModule';
        $cache = $cache ?: function_exists('apc_fetch') ? new ApcCache : new FilesystemCache($tmpDir);
        $cacheKey = $appName . $context;
        $initialization = function () {
            // initialize per system startup (not per each request)
        };
        $injector = function () use ($appModule, $cache) {
            return Injector::create([new $appModule], $cache,  __DIR__ . '/tmp');
        };
        $injector = new CacheInjector($injector, $initialization, $cacheKey, $cache);
        $app = $injector->getInstance('BEAR\Sunday\Extension\Application\AppInterface');

        /** $app \BEAR\Sunday\Extension\Application\AppInterface */
        return $app;
    }