--- /dev/null
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\linkit\ConfigurableAttributeBase.
+ */
+
+namespace Drupal\linkit;
+
+/**
+ * Provides a base class for configurable attributes.
+ *
+ * @see plugin_api
+ */
+abstract class ConfigurableAttributeBase extends AttributeBase implements ConfigurableAttributeInterface {
+}