Open the unreal editor and import a scene from datasmith.
Select some actors from the datasmith scene.
From the Blueprint menu in the toolbar, select "Convert Selected Components to Blueprint Class..."
Notice that ensure will be triggered if your are in development build and that the output log will contains a couple of "LogDatasmithContent: Warning: Serialization issue: null value found in templates"
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-68889 in the post.