access elements inside the shadow dom

I create automation tests and I have a problem to access elements inside the shadow dom.
I don’t find elements when I appeal to them.
Help me, please, with this problem

Any update on this?

One alternative to consider is to use Vaadin TestBench

How to find elements in shadow dom is explained in this video, roughly at 9:15 (but I warmly recommend to watch the whole video of TestBench is new to you)

Thanks for your reply.How to automate shadow roots elements which is in vaadin framework?