use wcf\data\object\type\ObjectTypeCache;
use wcf\data\AbstractDatabaseObjectAction;
use wcf\system\attachment\AttachmentHandler;
+use wcf\system\database\util\PreparedStatementConditionBuilder;
use wcf\system\event\EventHandler;
use wcf\system\exception\PermissionDeniedException;
use wcf\system\exception\UserInputException;
use wcf\system\request\LinkHandler;
use wcf\system\upload\DefaultUploadFileValidationStrategy;
use wcf\system\WCF;
-use wcf\util\FileUtil;
use wcf\util\ArrayUtil;
-use wcf\system\database\util\PreparedStatementConditionBuilder;
+use wcf\util\FileUtil;
/**
* Executes attachment-related actions.