/** Return the PropertyDescriptor of the setted property
	* This is the last property.
	* Remark: if the setted properties type is not a primitive type,
	* The user interface will actually set the idProperty of the setted property
	*/
	function getSettedProp() {
		$next = $this->getNext();
		if (!$next) return $this->getFirstProp();
		
		return $next->getSettedProp();		
	}