6952*6953* @since 2.1.06954*6955* @param string$thumbnail_urlURLfor the attachment thumbnail.6956* @param int$post_id Attachment ID.6957*/6958returnapply_filters('wp_get_attachment_thumb_url',$thumbnail_url,$post_id);6959}69606961/**6962* Verifies an attachment is of a given type.6963*6964* @since 4.2.0
History
Introduced in 2.1.0. Unchanged from 6.7.7 through 7.1.0.