ispim-1.0.x-dev/ispim.routing.yml

entity.ispim_preview_image.settings_form:
  path: /admin/config/media/ispim-preview-image/settings
  defaults:
    _title: 'Image Style Preview Image settings'
    _form: \Drupal\ispim\PreviewImage\SettingsForm
  requirements:
    _permission: ispim.ispim_preview_image.settings.admin