Type Alias Digests 

type Digests = BTreeMap<u64, SmallVec<[Digest; 1]>>;

The digest rows naming each infected state, keyed by the state.

A digest key of any other width is unreachable by digest lookup and so cannot misdirect a dedup; only the 32-byte rows are collected.

Aliased Type

struct Digests { /* private fields */ }