+<?php
+
+namespace Drupal\diff\Annotation;
+
+use Drupal\Component\Annotation\Plugin;
+
+/**
+ * Defines a DiffLayoutBuilder annotation object.
+ *
+ * Diff builders handle how fields are compared by the diff module.
+ *
+ * @Annotation
+ */
+class DiffLayoutBuilder extends Plugin {
+
+ /**
+ * The plugin ID.
+ *
+ * @var string
+ */
+ public $id;
+
+ /**
+ * The human-readable name of the diff layout builder.
+ *
+ * @var \Drupal\Core\Annotation\Translation
+ *
+ * @ingroup plugin_translatable
+ */
+ public $label;
+
+ /**
+ * The plugin description.
+ *
+ * @var string
+ */
+ public $description;
+
+}