Media Group Update
By default there is no instances of objects which could be deserialized from raw updates. If you want to get objects with this type, you should use something like dev.inmo.tgbotapi.extensions.api.SetWebhookKt.includeWebhookInRoute
See also
dev.inmo.tgbotapi.extensions.api.SetWebhookKt.includeWebhookInRoute
dev.inmo.tgbotapi.extensions.api.updates.UpdatesPollingKt.startGettingOfUpdates