public function Append ($path = '', $async = FALSE, $defer = FALSE, $doNotMinify = FALSE, $external = FALSE) {
		$item = $this->_completeItem($path, $async, $defer, $doNotMinify, $external);
		$actialGroupItems = & $this->_getScriptsGroupContainer($this->actualGroupName);
		array_push($actialGroupItems, $item);
		return $this;
	}