@NotNull
  public static PyDynamicallyEvaluatedType create(@NotNull PyType type) {
    final LinkedHashSet<PyType> members = new LinkedHashSet<>();
    if (type instanceof PyUnionType) {
      members.addAll(((PyUnionType)type).getMembers());
    }
    else {
      members.add(type);
    }
    members.add(null);
    return new PyDynamicallyEvaluatedType(members);
  }
@NotNull
  public static PyDynamicallyEvaluatedType create(@NotNull PyType type)