}
} else if (hvalue instanceof HttpTokenList) {
((HttpTokenList) hvalue).addToken(value, true);
} else if (hvalue instanceof HttpWarningList) {
HttpWarningList wl = (HttpWarningList) hvalue;
wl.addWarning(HttpFactory.parseWarning(value));
} else if (hvalue instanceof HttpString) {
// this is the default type for unkown header
// we don't know what it is, so just append
HttpString s = (HttpString) hvalue;
String string = (String) s.getValue();