How to get form data in Drupal 8?

Question

Drupal

Hello!
We need to get data from a Drupal 8 web form. The Webform module is used.
Previously, on version 7, I created a micro-module and used the _webform_submission_insert hook in it. Tried to find an alternative for 8 here but failed.
Tell me, please, which hook to use, how to get data from the form (after the validation has passed) to pass it to your handler?

Answer 1

The hook remained the same hook_webform_submission_insert