@Override
    public ImmutableMap<ImmutableContextSet, ImmutableList<LPSubjectReference>> getAllParents() {
        ImmutableMap.Builder<ImmutableContextSet, ImmutableList<LPSubjectReference>> map = ImmutableMap.builder();
        for (Map.Entry<ImmutableContextSet, Set<LPSubjectReference>> e : this.parents.entrySet()) {
            map.put(e.getKey(), ImmutableList.copyOf(e.getValue()));
        }
        return map.build();
    }
In-memory implementation of {@link LPSubjectData}.
sponge/src/main/java/me/lucko/luckperms/sponge/service/model/calculated/CalculatedSubjectData.java