protected void setTimeZone(char timeZoneFlag, char t0, char t1) {
        setTimeZone(timeZoneFlag, t0, t1, '0', '0');
    }
The value of a literal token, recorded as a string. For integers, leading 0x and 'l' suffixes are suppressed.
src/main/java/com/alibaba/fastjson/parser/JSONScanner.java