mIdToTag.clear();
mIdToItem.clear();
    private void refreshHandler(Element refresh) throws ServiceException {        mNameToTag.clear();        mIdToTag.clear();        Element mbx = refresh.getElement(MailService.E_MAILBOX);        if (mbx != null) mSize = mbx.getAttributeLong(MailService.A_SIZE);        Element tags = refresh.getElement(ZimbraNamespace.E_TAGS);        if (tags != null) {            for (Element t : tags.listElements(MailService.E_TAG))                addTag(new ZSoapTag(t));        }        Element folder = refresh.getElement(MailService.E_FOLDER);        refreshFolders(folder);    }