Hi. i'm working on some extensions for keycloak for our team purposes. Today i note that some instance of GroupModel(retrieved from keycloak) returned for me null from method getAttribute(String attrName). But javadoc from GroupModel states that this method never return null: /** * @param name * @return list of all attribute values or empty list if there are not any values. Never return null */ List<String> getAttribute(String name); I checked implementations in keycloak-parent and found this in org.keycloak.models.cache.infinispan.GroupAdapter: @Override public List<String> getAttribute(String name) { List<String> values = cached.getAttributes().get(name); if (values == null) return null; <---- Attention return values; } Is it bug?