docs: public Map<String, Collection<String>> queries() {
      Map<String, Collection<String>> queryMap = new LinkedHashMap<>();
      this.queries.forEach((key, queryTemplate) -> {
        List<String> values = new ArrayList<>(queryTemplate.getValues());
  
        /* add the expanded collection, but lock it */
        queryMap.put(key, Collections.unmodifiableList(values));
      });
  
      return Collections.unmodifiableMap(queryMap);
    }