code: public CMAWebhookHealth health(CMAWebhook webhook) {
      final String spaceId = getSpaceIdOrThrow(webhook, "webhook");
      final String webhookId = getResourceIdOrThrow(webhook, "webhook");
  
      return service.health(spaceId, webhookId).blockingFirst();
    }
docs: Return a general understanding of the health of the webhook.
  
  @param webhook Which webhook should be asked for its health?
  @return A health indicator summarizing healthy/total calls to the Webhook.
  @throws IllegalArgumentException if spaceId is null.
  @throws IllegalArgumentException if webhook is null.