public static Predicate<Node> from(String types) {
        return makePredicate(StringUtilities.split(types).stream()
                .map(NodeType::valueOf)
                .collect(Collectors.toCollection(() -> EnumSet.noneOf(NodeType.class))));
    }
Returns a node filter which matches a comma or space-separated list of types
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/node/filter/NodeTypeFilter.java