fn stream(r: *Io.Reader, w: *Io.Writer, limit: Io.Limit) Io.Reader.StreamError!usize
fn stream(r: *Io.Reader, w: *Io.Writer, limit: Io.Limit) Io.Reader.StreamError!usize { _ = limit; _ = w; const fr: *File.Reader = @alignCast(@fieldParentPtr("interface", r)); const context: *Context = @fieldParentPtr("fr", fr); try fillUntimed(context, 1); return 0; }