--- /dev/null
+<?php
+
+namespace Drupal\file_mdm\Plugin\Annotation;
+
+use Drupal\Component\Annotation\Plugin;
+
+/**
+ * Defines a Plugin annotation object for FileMetadata plugins.
+ *
+ * @Annotation
+ */
+class FileMetadata extends Plugin {
+
+ /**
+ * The plugin ID.
+ *
+ * @var string
+ */
+ public $id;
+
+ /**
+ * The title of the plugin.
+ *
+ * The string should be wrapped in a @Translation().
+ *
+ * @var \Drupal\Core\Annotation\Translation
+ *
+ * @ingroup plugin_translatable
+ */
+ public $title;
+
+ /**
+ * An informative description of the plugin.
+ *
+ * The string should be wrapped in a @Translation().
+ *
+ * @var \Drupal\Core\Annotation\Translation
+ *
+ * @ingroup plugin_translatable
+ */
+ public $help;
+
+}