# File lib/devise_two_factor/models/two_factor_backupable.rb, line 34
      def invalidate_otp_backup_code!(code)
        codes = self.otp_backup_codes || []

        codes.each do |backup_code|
          next unless Devise::Encryptor.compare(self.class, backup_code, code)

          codes.delete(backup_code)
          self.otp_backup_codes = codes
          return true
        end

        false
      end