$session->param(self => $self);

##</code><code>##

if(my $newSelf = $session->param("self")) {
    %$self = %$newSelf;
}

##</code><code>##

my $ob = $self->myobject;
$ob->mymethod(42);

##</code><code>##

Can't locate object method "mymethod" via package
"My::Class" (perhaps you forgot to load "My::Class"?)

##</code><code>##

bless $ob, ref($ob);