a new [entity tag][gfile-etag] for the file, or NULL
TRUE if a backup should be created
a set of GFileCreateFlags
optional gio.Cancellable object, NULL to ignore
a GAsyncReadyCallback to call when the request is satisfied
the data to pass to callback function
2.40
Same as g_file_replace_contents_async() but takes a glib.Bytes input instead. This function will keep a ref on contents until the operation is done. Unlike g_file_replace_contents_async() this allows forgetting about the content without waiting for the callback.
When this operation has completed, callback will be called with user_user data, and the operation can be finalized with g_file_replace_contents_finish().