Hi. What is the replacement for flatten in Prefect 2?

I created a task which flattens. This allows to submit everything and see the graph. It could be done directly on the flow by getting the results from the futures. This way it will not appear in the graph and will not allow to submit whatever is next.

Thanks. I also create a task, but wanted to use built in if it exists.

I did not see it.

Weird