public Map<String, Set<Permissible>> detach() {
        Map<String, Set<Permissible>> map = new HashMap<>();
        for (Map.Entry<String, Set<Permissible>> ent : entrySet()) {
            Set<Permissible> backing = ((LPSubscriptionValueSet) ent.getValue()).backing;
            Set<Permissible> copy = Collections.newSetFromMap(new WeakHashMap<>(backing.size()));
            copy.addAll(backing);
            map.put(ent.getKey(), copy);
        }
        return map;
    }
Converts this map back to a standard HashMap

@return a standard representation of this map
nukkit/src/main/java/me/lucko/luckperms/nukkit/inject/server/LuckPermsSubscriptionMap.java