pub const RESUME_FLAG: &str = "--update-resume-internal";Expand description
The command-line flag the library uses to relaunch the consuming binary between update phases.
A consuming main() must detect this flag (before any other argument
parsing), pass the JSON value that follows it to
UpdateManager::resume_from_arg, and exit immediately if it returns
Ok(true) — so that the next phase’s process can take ownership of the
binary.