* @return combinable
* @throws QuickFixException
*/
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;