}
if (contextual instanceof PassivationCapable) {
// this is an extension-provided passivation capable bean
PassivationCapable passivationCapable = (PassivationCapable) contextual;
String id = passivationCapable.getId();
BeanIdentifier identifier = new StringBeanIdentifier(id);
passivationCapableContextuals.putIfAbsent(identifier, contextual);
return identifier;
} else {
BeanIdentifier id = contextuals.get(contextual);
if (id != null) {
return id;
} else {
synchronized (contextual) {
id = contextuals.get(contextual);