+<?php
+
+namespace Drupal\metatag_google_plus\Plugin\metatag\Tag;
+
+use Drupal\metatag\Plugin\metatag\Tag\MetaItempropBase;
+
+/**
+ * The GooglePlus 'image' meta tag.
+ *
+ * @MetatagTag(
+ * id = "google_plus_image",
+ * label = @Translation("Image"),
+ * description = @Translation("The URL of an image which should represent the content. For best results use an image that is at least 1200 x 630 pixels in size, but at least 600 x 316 pixels is a recommended minimum. Supports PNG, JPEG and GIF formats."),
+ * name = "itemprop:image",
+ * group = "google_plus",
+ * weight = 3,
+ * type = "image",
+ * secure = FALSE,
+ * multiple = TRUE
+ * )
+ */
+class Image extends MetaItempropBase {
+ // Nothing here yet. Just a placeholder class for a plugin.
+}