assertThrows(NullPointerException.class, () -> collection.removeAll(null));
  }

  @CollectionFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_QUERIES)
  public void testRemoveAll_containsNullNo() {
    MinimalCollection<?> containsNull = MinimalCollection.of((Object) null);
    try {
      assertFalse(
          "removeAll(containsNull) should return false or throw",