Iterator i = tagList.iterator();
i = tagList.iterator();
    private void cleanUp()    throws Exception {        if (mMessage1 != null) {            mMbox.delete(null, mMessage1.getId(), MailItem.TYPE_MESSAGE);        }        if (mMessage2 != null) {            mMbox.delete(null, mMessage2.getId(), MailItem.TYPE_MESSAGE);        }        if (mMessage3 != null) {            mMbox.delete(null, mMessage3.getId(), MailItem.TYPE_MESSAGE);        }        if (mMessage4 != null) {            mMbox.delete(null, mMessage4.getId(), MailItem.TYPE_MESSAGE);        }        List tagList = mMbox.getTagList();        if (tagList == null) {            return;        }        Iterator i = tagList.iterator();        while (i.hasNext()) {            Tag tag = (Tag)i.next();            if (tag.getName().startsWith(TAG_PREFIX)) {                mMbox.delete(null, tag.getId(), tag.getType());            }        }    }