static void ToggleSizeRequested_cb(IntPtr inst, out int requisition)
{
try {
MenuItem __obj = GLib.Object.GetObject(inst, false) as MenuItem;
__obj.OnToggleSizeRequested(out requisition);
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException(e, true);
// NOTREACHED: above call does not return.
throw e;
}
}