private static String getStaticStringField(Class<?> type, String fieldName) {
        try {
            return (String) type.getField(fieldName).get(null);
        } catch (Exception e) {
            throw new RuntimeException
                    (e.getMessage() + ": Static field " + fieldName + " not " + "accessible in " + type.getName());
        }
    }
Returns the serialized representation of the given node.
<p>
Declared static, instead of InnerNode member, to avoid a public 0-arg method with a commonly used name.

@param node The inner node
@return a list of strings, containing the serialized representation of this config
config-lib/src/main/java/com/yahoo/config/ConfigInstance.java