gistfile1.java

    @JsonAnySetter
    @SuppressWarnings("unused") //called by jackson
    private void setUnknownProperty(String key, JsonNode value) {
        extraProperties.put(key, value);
    }
    
    @JsonAnyGetter
    @SuppressWarnings("unused") //called by Jackson
    private Map<String, JsonNode> getUnknownProperty() {
        return extraProperties;
    }