wse-1.0.x-dev/modules/wse_preview/wse_preview.routing.yml

wse_preview.workspace_preview:
  path: '/workspace-preview/{preview_id}'
  defaults:
    _title: 'Workspace Preview'
    _controller: '\Drupal\wse_preview\Controller\WsePreviewController::preview'
  requirements:
    _permission: 'access workspace previews'

entity.workspace.preview_link_form:
  path: '/admin/config/workflow/workspaces/manage/{workspace}/preview-link'
  defaults:
    _form: '\Drupal\wse_preview\Form\WsePreviewLinkForm'
    _title: 'Preview link'
  options:
    _admin_route: TRUE
    parameters:
      workspace:
        type: entity:workspace
  requirements:
    _entity_access: 'workspace.view'
    _workspace_status: 'open'
    _permission: 'manage workspace previews+view any workspace+edit any workspace+administer workspaces'

workspace.preview_link_settings_form:
  path: '/admin/config/workflow/workspaces/settings/preview-settings'
  defaults:
    _form: '\Drupal\wse_preview\Form\WsePreviewSettingsForm'
    _title: 'Preview link settings'
  requirements:
    _permission: 'administer workspaces'