@Bean
        public FirestoreGrpc.FirestoreStub firestoreGrpcStub() {
            return mock(FirestoreGrpc.FirestoreStub.class);
        }
This is {@link GoogleCloudFirestoreTicketRegistryTests}.

@author Misagh Moayyed
@since 7.0.0
support/cas-server-support-gcp-firestore-ticket-registry/src/test/java/org/apereo/cas/ticket/registry/GoogleCloudFirestoreTicketRegistryTests.java