private static byte[] buildVersionOutput() throws JsonProcessingException {
        return toPrettyString(
                jsonMapper.createObjectNode()
                .put("version", Vtag.currentVersion.toString()));
    }
A handler which returns state (health) information from this container instance: Status, metrics and vespa version.

@author Simon Thoresen Hult
container-core/src/main/java/com/yahoo/container/jdisc/state/StateHandler.java