src/main/java/org/nustaq/serialization/FSTConfiguration.java
public static void prettyPrintJson(Object o) {
        FSTConfiguration conf = constructJsonConf(true, true, null);
        System.out.println(conf.asJsonString(o));
    }
public static void prettyPrintJson(Object o) {
        FSTConfiguration conf = constructJsonConf(true, true, null);
        System.out.println(conf.asJsonString(o));
    }
debug only, very slow (creates config with each call). Creates new conf so custom serializers are ignored.

@param o