How to use the offlineimap.imaputil.dequote function in offlineimap

try:
                labels_str = '(' + ' '.join([imaputil.quote(lb) for lb in labels]) + ')'
                # Coalesce uid's into ranges
                uid_str = imaputil.uid_sequence(uidlist)
                result = self._store_to_imap(imapobj, uid_str, arg, labels_str)

            except imapobj.readonly:
                self.ui.labelstoreadonly(self, uidlist, labels)
                return None

            finally:
                self.imapserver.releaseconnection(imapobj)

            if result:
                retlabels = imaputil.flags2hash(imaputil.imapsplit(result)[1])['X-GM-LABELS']
                retlabels = set([imaputil.dequote(lb) for lb in imaputil.imapsplit(retlabels)])
                return retlabels
        return None

self.plainauth(imapobj)
                    # Would bail by here if there was a failure.
                    success = 1
                except imapobj.error, val:
                    self.passworderror = str(val)
                    self.password = None

        if self.delim == None:
            listres = imapobj.list(self.reference, '""')[1]
            if listres == [None] or listres == None:
                # Some buggy IMAP servers do not respond well to LIST "" ""
                # Work around them.
                listres = imapobj.list(self.reference, '"*"')[1]
            self.delim, self.root = \
                        imaputil.imapsplit(listres[0])[1:]
            self.delim = imaputil.dequote(self.delim)
            self.root = imaputil.dequote(self.root)

        self.connectionlock.acquire()
        self.assignedconnections.append(imapobj)
        self.lastowner[imapobj] = thread.get_ident()
        self.connectionlock.release()
        return imapobj

# Would bail by here if there was a failure.
                    success = 1
                except imapobj.error, val:
                    self.passworderror = str(val)
                    self.password = None

        if self.delim == None:
            listres = imapobj.list(self.reference, '""')[1]
            if listres == [None] or listres == None:
                # Some buggy IMAP servers do not respond well to LIST "" ""
                # Work around them.
                listres = imapobj.list(self.reference, '"*"')[1]
            self.delim, self.root = \
                        imaputil.imapsplit(listres[0])[1:]
            self.delim = imaputil.dequote(self.delim)
            self.root = imaputil.dequote(self.root)

        self.connectionlock.acquire()
        self.assignedconnections.append(imapobj)
        self.lastowner[imapobj] = thread.get_ident()
        self.connectionlock.release()
        return imapobj

listres = imapobj.list(self.reference, '""')[1]
                if listres == [None] or listres == None:
                    # Some buggy IMAP servers do not respond well to LIST "" ""
                    # Work around them.
                    listres = imapobj.list(self.reference, '"*"')[1]
                if listres == [None] or listres == None:
                    # No Folders were returned. This occurs, e.g. if the
                    # 'reference' prefix does not exist on the mail
                    # server. Raise exception.
                    err = "Server '%s' returned no folders in '%s'"% \
                        (self.repos.getname(), self.reference)
                    self.ui.warn(err)
                    raise Exception(err)
                self.delim, self.root = \
                     imaputil.imapsplit(listres[0])[1:]
                self.delim = imaputil.dequote(self.delim)
                self.root = imaputil.dequote(self.root)

            with self.connectionlock:
                self.assignedconnections.append(imapobj)
                self.lastowner[imapobj] = curThread.ident
            return imapobj
        except Exception as e:
            """If we are here then we did not succeed in getting a
            connection - we should clean up and then re-raise the
            error..."""

            self.semaphore.release()

            severity = OfflineImapError.ERROR.REPO
            if type(e) == gaierror:
                #DNS related errors. Abort Repo sync

continue
            messagestr = messagestr.split(' ', 1)[1]
            # e.g.: {'X-GM-LABELS': '("Webserver (RW.net)" "\\Inbox" GInbox)', 'FLAGS': '(\\Seen)', 'UID': '275440'}
            options = imaputil.flags2hash(messagestr)
            if not 'UID' in options:
                self.ui.warn('No UID in message with options %s' %\
                                          str(options),
                                          minor = 1)
            else:
                uid = int(options['UID'])
                self.messagelist[uid] = self.msglist_item_initializer(uid)
                flags = imaputil.flagsimap2maildir(options['FLAGS'])
                # e.g.: '("Webserver (RW.net)" "\\Inbox" GInbox)'
                m = re.search('^[(](.*)[)]', options['X-GM-LABELS'])
                if m:
                    labels = set([imaputil.dequote(lb) for lb in imaputil.imapsplit(m.group(1))])
                else:
                    labels = set()
                labels = labels - self.ignorelabels
                rtime = imaplibutil.Internaldate2epoch(messagestr)
                self.messagelist[uid] = {'uid': uid, 'flags': flags, 'labels': labels, 'time': rtime}

def __init__(self, imapserver, name, visiblename, accountname, repository):
        self.config = imapserver.config
        self.expunge = repository.getexpunge()
        self.name = imaputil.dequote(name)
        self.root = None # imapserver.root
        self.sep = imapserver.delim
        self.imapserver = imapserver
        self.messagelist = None
        self.visiblename = visiblename
        self.accountname = accountname
        self.repository = repository
        self.randomgenerator = random.Random()
        BaseFolder.__init__(self)