{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
// Encodable and Decodable we would apply varint encoding to the bitmasks, which is slower
// `Block` is a `u64`, but it is a bitmask not a numeric value. If we were to just derive
// and also produces more output when the high bits of each `u64` are occupied.