private function doApplicationConfigExtend(Config $config)
    {
        $config_directories = ConfigDirectory::getDirectories(
            null,
            $this->baseRepository,
            $this->context,
            $this->environment
        );

        foreach ($config_directories as $directory) {
            if (is_dir($directory)) {
                $config->extend($directory, $this->overrideConfig);
            }
        }
    }