pub fn spec_for_download(
file: &str,
url: &str,
size: u64,
sha256: Option<String>,
facts: ModelFacts,
) -> ModelSpecExpand description
A spec for a file a feed names: its URL, the entry’s own byte length, and the digest where the host publishes one - the Hub’s blobs carry a sha256 per file, and the speech feed’s documents carry none.