/**
* Delete the specified messages from this folder.
*
* @param array|string $uids Backend id(s) of the message to be deleted.
*/
public function deleteBackendIds($uids)
{
if (!is_array($uids)) {
$uids = array($uids);
}
$this->_driver->deleteMessages($this->_folder->getPath(), $uids);
$this->_driver->expunge($this->_folder->getPath());
}