@Override
    protected InLongMsgHead parseHead(String attr) {
        return InLongMsgCsvUtils.parseHead(attr);
    }
True if the append configed escape char, default false.
inlong-sort/sort-formats/format-row/format-inlongmsg-csv/src/main/java/org/apache/inlong/sort/formats/inlongmsgcsv/InLongMsgCsvFormatDeserializer.java