SpiceDB is an open source, Google Zanzibar-inspired, database system for creating and managing security-critical application permissions.

SpiceDB

The issue is here: https://github.com/authzed/spicedb/issues/256
As I look further, I think the watch support may be missing/incomplete in the Java client.

Ah, I think I found the proper. It is in `v1alpha1`

Still no luck on this. I tried the "server-side streaming" pattern using a BlockingStub. On issuing the call, I get:
```
io.grpc.StatusRuntimeException: UNIMPLEMENTED: unknown service authzed.api.v1alpha1.WatchResourcesService

    at io.grpc.Status.asRuntimeException(Status.java:535)
    at io.grpc.stub.ClientCalls$BlockingResponseStream.hasNext(ClientCalls.java:648)
```

I get the same response using the streaming pattern. 😔

`WatchResourcesService` is not `WatchService`

`v1alpha1` was a test version of the API for experimentation and has been removed