/**
* @param Folder $folder
* @param bool $useFilters
* @param bool $recursive
* @return int Number of files in folder
* @throws Exception\InsufficientFolderAccessPermissionsException
*/
public function countFilesInFolder(Folder $folder, $useFilters = true, $recursive = false)
{
$this->assureFolderReadPermission($folder);
$filters = $useFilters ? $this->fileAndFolderNameFilters : array();
return $this->driver->countFilesInFolder($folder->getIdentifier(), $recursive, $filters);
}