backendService property
If set, this invalidation rule will only apply to requests routed to the
given backend service or backend bucket.
For example, for a backend bucket bb1 in the same scope as the URL map,
the path would be projects/my-project/global/backendBuckets/bb1; and
for a backend service bs1 in the same scope as the URL map, the path
would be projects/my-project/global/backendServices/bs1.
Implementation
core.String? backendService;