@Override public void setApplicationState(OrchestratorContext context, ApplicationInstanceId applicationId, ClusterControllerNodeState wantedState) {
                nodes.replaceAll((key, state) -> key.startsWith(clusterName + "/") ? wantedState : state);
            }
Mock implementation of ClusterControllerClient
<p>

@author smorgrav
orchestrator/src/test/java/com/yahoo/vespa/orchestrator/controller/ClusterControllerClientFactoryMock.java