/** If the class does not exist, try to include a PntRequestHanlder. 
	 * For each class name inclusion is first tried from $thisfunction tryUseHandlerClass(->getDir(), 
	 * 	    If the class is not found, a class from the classes root folder is tried
	 * @param string $handlerClass name of the class 
	 * @param array $attempted to add info to about the class names and folders that where tried
	 * @return boolean wheather a class file was included. Also true if the class already existed.
	 */
	function tryUseHandlerClass($handlerClass, &$attempted) {
		$attempted = array_merge($attempted, $this->getTryUseClassTryParams($handlerClass, $this->getDir()));
		$included = $this->tryUseClass($handlerClass, $this->getDir());
		return $included ? $handlerClass : null;
	}