private static AclMapping aclRequestMapper() {
        return HttpMethodAclMapping.standard()
                .override(com.yahoo.jdisc.http.HttpRequest.Method.POST, AclMapping.Action.READ)
                .build();
    }
Add properties POSTed as a JSON payload, if any, to the request map
container-search/src/main/java/com/yahoo/search/handler/SearchHandler.java