Undo/redo drupal console generate:plugin:block?

Question

I ran drupal console generate:plugin:block and made a mistake. I'd like to run it again, but I get this error:

 'block' entity with ID 'my_block' already exists.

I've removed the source file that the command created, but this error still persists. I'm guessing the block was added to the site's actual configuration. How can I undo/overwrite it?

Answer 1

I think I found the answer myself:

 drupal config:delete active block.block.my_block

(For my specific case) Good luck finding the configuration name. There's no listing from the console. I had to export the whole damn thing to a directory and grep for it.