pub fn fetch(asker: &mut dyn Asker, f: &Fetch) -> Result<Vec<u8>, String>Expand description
The file a product order carries, pulled (MONETIZE-FIX 2026-11-01: the ONE box never
pushes a file into an estate): Fleet.Ask{fetch} on the order’s own link. The ONE box answers
only a file an order queued for this box names, checked against its sha256 there; its size
is checked here before it is handed to the product’s executor.