@JsonPropertyDescription("An ordered list of http protocol versions to use, in order of preference. " +
            "E.g. 'http/1.1', 'http/2'. If not set the client will use the most efficient protocol available. " +
            "This may be useful if the server does not properly support http/2 or you are using two-way SSL.")
    public List<String> getHttpProtocols() {
        return httpProtocols;
    }
An abstraction of some of the configuration available on OkHttpClient.Builder
stroom-util/src/main/java/stroom/util/config/OkHttpClientConfig.java