public function read($file)
    {
        $file = '/settings/' . $file;

        /**
         * @todo validate that $file is a string
         */

        $result = [];

        if ($this->source_filesystem->has($file . '.yml')) {

            $result = $this->yaml->parse($this->source_filesystem->read($file . '.yml'));
        }

        return $result;
    }