pub fn checksum_file_async<P: IsA<File>, Q: IsA<Cancellable>, R: FnOnce(Result<Checksum, Box<dyn Error>>) + Send + 'static>(
    f: &P,
    objtype: ObjectType,
    io_priority: i32,
    cancellable: Option<&Q>,
    callback: R
)
Expand description

Asynchronously compute the SHA-256 checksum of a file.