Modifying default workbench view filter via code Workbench ships the 'My Content' view default in code. I want it to actually show "my content" by adding a contextual filter with the author by field = current user. 

I've looked into http://blog.arvixe.com/altering-default-views-in-code/, but it is a drupal 7 implementation and doesn't touch on the filtering.
The preferred approach to do those things in Drupal 7 is to:


Clone "My content" view to "My content clone view".
Make modifications to "My content clone view"
Disable "My content" (the original view).


I still haven't tried this in Drupal 8, but I think the principle should be the same.

Regards,
Oleg