private static List<String> splitVersions(List<String> clientSupportedVersions) {
        List<String> splittedVersions = new ArrayList<>();
        for (String v : clientSupportedVersions) {
            if (v == null || v.trim().isEmpty()) {
                continue;
            }
            if (!v.contains(",")) {
                splittedVersions.add(v.trim());
                continue;
            }
            for (String part : v.split(",")) {
                part = part.trim();
                if (!part.isEmpty()) {
                    splittedVersions.add(part);
                }
            }
        }
        return splittedVersions;
    }
Accept feeds from outside the Vespa cluster.

@author Steinar Knutsen
vespaclient-container-plugin/src/main/java/com/yahoo/vespa/http/server/FeedHandler.java