public Site setAcceptStatCode(Set<Integer> acceptStatCode) {
        this.acceptStatCode = acceptStatCode;
        return this;
    }
Set acceptStatCode.<br>
When status code of http response is in acceptStatCodes, it will be processed.<br>
{200} by default.<br>
It is not necessarily to be set.<br>

@param acceptStatCode acceptStatCode
@return this
webmagic-core/src/main/java/us/codecraft/webmagic/Site.java