public void addRangeFeature(String key, long value) {
        addRangeFeature(key, value, ALL_SUB_QUERIES);
    }
Adds a range feature with a given value to the predicate query.
This feature is applied to all sub queries.

@param key name of the feature to be set in this query
@param value value of the feature
container-search/src/main/java/com/yahoo/prelude/query/PredicateQueryItem.java