@Override
  public CompletableFuture<Boolean> isExpandableAsync(Value value, EvaluationContext evaluationContext, NodeDescriptor parentDescriptor) {
    DebuggerManagerThreadImpl.assertIsManagerThread();
    if (value instanceof ArrayReference) {
      return DebuggerUtilsAsync.length((ArrayReference)value).thenApply(r -> r > 0).exceptionally(throwable -> true);
    }
    else if (value instanceof ObjectReference) {
      return CompletableFuture.completedFuture(true); // if object has no fields, it contains a child-message about that
      //return ((ObjectReference)value).referenceType().allFields().size() > 0;
    }

    return CompletableFuture.completedFuture(false);
  }
@Override
  public CompletableFuture<Boolean> isExpandableAsync(Value value, EvaluationContext evaluationContext, NodeDescriptor parentDescriptor)