private static function from($type, $key, $default, &$source = null) {

    	if(null === $source) {

	    	if(static :: isMethod($type)) {

	    		$source = [];
	    		static :: parseRawHttpRequest($source);
	    	}
    	}

    	static :: $method = ['method' => $type, 'data' => &$source];

    	if(null !== $key) {
    		return static :: get($key, $default);
    	}

    	return $source;
    }