Shrine

What's the best way to manually delete a file and its derivatives when enabling the keep_file plugin? `

Question
#1 
class KeepFileUploader < Shrine
  plugin :keep_files
end

class Book < ApplicationRecord
  include KeepFileUploader::Attachment(:cover)
end

But I want to delete the files on disk in some context. What’s the best way to do it in Shrine? Thank you.

One method I tried works is using attacher:

Book.first.cover_attacher.destroy

Or how to temporarily enable keep file when uploading a file without enabling keep_file plugin?