List<String> tgt = target.getGoals();
            List<String> merged = new ArrayList<>(tgt.size() + src.size());
            merged.addAll(tgt);
            merged.addAll(src);
            target.setGoals(merged);
        }
    }

    protected void mergeResource(
            Resource target, Resource source, boolean sourceDominant, Map<Object, Object> context) {