if (effectiveExposeHeaders != null) {
addHeaders(rbuilder, CorsHeaderConstants.HEADER_AC_EXPOSE_HEADERS,
effectiveExposeHeaders, false);
}
// if someone wants to clear the cache, we can't help them.
return rbuilder.build();
} else {
// 5.2.8 max-age
String maValue = (String)m.getExchange().get(CorsHeaderConstants.HEADER_AC_MAX_AGE);
if (maValue != null) {
rbuilder.header(CorsHeaderConstants.HEADER_AC_MAX_AGE, maValue);