ispim-1.0.x-dev/drush.services.yml

services:
  ispim.preview_image.commands:
    class: 'Drupal\ispim\Commands\PreviewImageCommands'
    arguments:
      - '@entity_type.manager'
      - '@entity_field.manager'
      - '@file.repository'
    tags:
      -
        name: 'drush.command'