Wraps [method@Gio.
File.replace_contents_bytes_async]
| file |
a [iface@Gio.File] |
| contents |
a [struct@GLib.Bytes] |
| etag |
the etag or null |
| make_backup |
if a backup file should be created |
| flags |
a set of [flags@Gio.FileCreateFlags] |
|
a [class@Dex.Future] which resolves to the new etag. Therefore, it is possible to be null without an error having occurred. |