[keycloak-user] Possible bug in GroupModel implementations

[Ilya Korol]

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?