@Override
    public int hashCode() {
        int result = url != null ? url.hashCode() : 0;
        result = 31 * result + (method != null ? method.hashCode() : 0);
        return result;
    }
The http method of the request. Get for default.
@return httpMethod
@see us.codecraft.webmagic.utils.HttpConstant.Method
@since 0.5.0
webmagic-core/src/main/java/us/codecraft/webmagic/Request.java