GCM add wait_for_update parameter

Hello Thomas,
Google Consent Mode works perfectly.
Could you add the wait_for_update parameter though?

gtag("consent", "default", {
ad_user_data: "denied",
ad_personalization: "denied",
ad_storage: "denied",
analytics_storage: "denied",
wait_for_update: 2000 // milliseconds to wait for update
});