@Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;

            Feature feature = (Feature) o;

            if (!key.equals(feature.key)) return false;
            if (!value.equals(feature.value)) return false;

            return true;
        }
Parses a query formatted using the deprecated boolean query format (query properties).
predicate-search/src/main/java/com/yahoo/search/predicate/utils/VespaQueryParser.java