There is an implementation issue for Option::orElse

We should ideally have:

• Option::or to give a default value
• Option::orElse to execute a closure in lazy loading

Here, the _from_email will always be executed, to get the default value to pass to orElse

Our code could become:

->orElse(function() use ($expression) {
    return self::get_user_from_email($expression);
})

In Keruald, this None::orElse must method actually match or():

public function orElse (mixed $default) : mixed {
    return $default;
}

It should execute the function, while in Some, the implementation is correct:

public function orElse (callable $callable) : mixed {
    return $callable()
}