fn fileMemoryMapRead(userdata: ?*anyopaque, mm: *File.MemoryMap) File.ReadPositionalError!void
fn fileMemoryMapRead(userdata: ?*anyopaque, mm: *File.MemoryMap) File.ReadPositionalError!void { const ev: *Evented = @ptrCast(@alignCast(userdata)); _ = ev; _ = mm; }