?$this->t("<strong>Warning:</strong> This entity type's sitemap settings including per-entity overrides will be deleted after hitting <em>Save</em>.")
:$this->t("<strong>Warning:</strong> The sitemap settings for <em>@bundles</em> and their per-entity overrides will be deleted after hitting <em>Save</em>.",
$form['simple_sitemap_entities']['entities'][$entity_type_id][$entity_type_id.'_enabled']['#description']=$this->t('Sitemap settings for this entity type can be set below and overridden on its entity pages.');