Cannot request events delta without startDateTime

Describe the bug

Event delta documentation says param startDateTime is optional when working with calendars but class DeltaRequestBuilder always include it in template url causing call to fail with ODataError.

Expected behavior

When performing a normal call without any optional param to get a full delta, no error should append.

How to reproduce

$client->me()
->calendars()
->byCalendarId($remoteId)
->events()
->delta()
->get(
    new DeltaRequestBuilderGetRequestConfiguration([
        'Prefer' => sprintf('outlook.timezone="%s"', $local->getTimeZone()->getName())
    ])
)
->wait()

SDK Version

2.8.0

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output

{
    "error": {
        "code": "ErrorInvalidParameter",
        "message": "The value '' of parameter 'StartDateTime' is invalid."
    }
}

Configuration

No response

Other information

No response

Commencez par src/Generated/Users/Item/Calendars/Item/Events/Delta/DeltaRequestBuilder.php et comparez son URL de modèle avec la documentation Event delta liée dans l’issue. Reproduisez la requête de delta du calendrier sans startDateTime ; le travail est terminé lorsque la requête réussit sans erreur StartDateTime invalide, tandis que les requêtes qui fournissent le paramètre continuent de fonctionner.