/**
* Get metadata information for a mailbox.
*
* @param string $mailbox An IMAP mailbox string.
* @param integer $uidvalid The IMAP uidvalidity value of the mailbox.
* @param array $entries An array of entries to return. If empty,
* returns all metadata.
*
* @return array The requested metadata. Requested entries that do not
* exist will be undefined. The following entries are
* defaults and always present:
* - uidvalid: (integer) The UIDVALIDITY of the mailbox.
*/
public function getMetaData($mailbox, $uidvalid = null, array $entries = array())
{
return $this->_backend->getMetaData(strval($mailbox), $uidvalid, $entries);
}