fn fileSeekBy(userdata: ?*anyopaque, file: File, relative_offset: i64) File.SeekError!void
fn fileSeekBy(userdata: ?*anyopaque, file: File, relative_offset: i64) File.SeekError!void { const k: *Kqueue = @ptrCast(@alignCast(userdata)); _ = k; _ = file; _ = relative_offset; @panic("TODO"); }