@Override
  public <A extends ClusterManagementOperation<V>, V extends OperationResult> CompletableFuture<ClusterManagementOperationResult<A, V>> getFuture(
      A opType, String opId) {
    throw new IllegalStateException("This should never be called on locator");
  }
each locator will have one instance of this running if enabled
geode-core/src/main/java/org/apache/geode/management/internal/api/LocatorClusterManagementService.java