            Deltas::default()
        }
    }
}

/// Iterator over the set of per-region deltas for an item.
#[derive(Copy, Clone, Default)]
struct Deltas<'a> {
    store: ItemVariationStore<'a>,
    cursor: Cursor<'a>,
    region_indices: Slice<'a, u16>,
    num_word_deltas: u16,
    long_words: bool,
    len: u16,