public record UnmodifiableRecord(List<String> list, Set<String> set, Map<String, String> map) {
    public UnmodifiableRecord {
        list = list != null ? List.copyOf(list) : Collections.emptyList();
        set = set != null ? Set.copyOf(set) : Collections.emptySet();
        map = map != null ? Map.copyOf(map) : Collections.emptyMap();
    }
}

public class UnmodifiableClass {
    private final List<String> list;
    private final Set<String> set;
    private final Map<String, String> map;

    public UnmodifiableClass(List<String> list, Set<String> set, Map<String, String> map) {
        this.list = list != null ? List.copyOf(list) : Collections.emptyList();
        this.set = set != null ? Set.copyOf(set) : Collections.emptySet();
        this.map = map != null ? Map.copyOf(map) : Collections.emptyMap();
    }
    // getters
}