private WeightedSetItem fillWeightedSet(Inspector value, HashMap<Integer, Inspector> children, WeightedSetItem out) {
        addItems(children, out);

        return leafStyleSettings(getAnnotations(value), out);
    }
Translates a list of grouping requests on JSON form to a list in the grouping language form
container-search/src/main/java/com/yahoo/search/query/SelectParser.java