private Combinable getCombinable(ClientLibraryDef clientLibrary) throws QuickFixException {
String url = clientLibrary.getUrl();
Combinable combinable = null;
if (StringUtils.isBlank(url)) {
ClientLibraryResolver resolver = getResolver(clientLibrary);
if (resolver != null && resolver.canCombine()) {
// combinable resolver
combinable = (Combinable) resolver;
}
} else if (StringUtils.startsWithIgnoreCase(url, DefDescriptor.CSS_PREFIX + "://") ||
StringUtils.startsWithIgnoreCase(url, DefDescriptor.JAVASCRIPT_PREFIX + "://")) {