presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/RaptorSplitManager.java/RaptorSplitManager/getAddressesForNodes
class RaptorSplitManager:    private static List<HostAddress> getAddressesForNodes(Map<String, Node> nodeMap, Iterable<String> nodeIdentifiers)
    {
        ImmutableList.Builder<HostAddress> nodes = ImmutableList.builder();
        for (String id : nodeIdentifiers) {
            Node node = nodeMap.get(id);
            if (node != null) {
                nodes.add(node.getHostAndPort());
            }
        }
        return nodes.build();
    }