future.addCallback(new FutureCallback<Optional<FlowCapableNode>>() {
@Override
- public void onSuccess(@Nonnull Optional<FlowCapableNode> result) {
+ public void onSuccess(Optional<FlowCapableNode> result) {
result.map(Collections::singleton).orElse(Collections.emptySet()).stream()
.filter(Objects::nonNull)
.filter(flowCapableNode -> Objects.nonNull(flowCapableNode.getTable()))