mData.modContent = mMailbox.getOperationChangeID();
mData.contentChanged(mMailbox);
    void setContent(ParsedMessage pm, String digest, int size, int imapId) throws ServiceException {        // mark the old blob as ready for deletion        PendingDelete info = getDeletionInfo();        info.itemIds.clear();  info.unreadIds.clear();        mMailbox.markOtherItemDirty(info);        markItemModified(Change.MODIFIED_CONTENT  | Change.MODIFIED_DATE |                         Change.MODIFIED_IMAP_UID | Change.MODIFIED_SIZE);        mData.blobDigest = digest;        mData.date       = mMailbox.getOperationTimestamp();        mData.modContent = mMailbox.getOperationChangeID();        mImapUID = imapId;        mBlob = null;        reanalyze(pm, size);    }