ActionFactory::getAction

static function getAction(string $actionName, ?bool $undo = false): ?BaseAction
{
	if (self::isActionExists($actionName))
	{
		$class = self::getActionClass($actionName, $undo);
		if ($class)
		{
			return new $class();
		}
	}

	// todo: null or err?
	return null;
}