Wraps [method@Gio.
BufferedInputStream.fill_async].
| stream |
a [class@Gio.BufferedInputStream] |
| count |
the number of bytes to fill, or -1 |
| io_priority |
priority for the IO operation |
|
a [class@Dex.Future] that resolves to the number of bytes read as a `gint64`, or rejects with error. |