--- /dev/null
+<?php
+
+namespace Drupal\migrate_drupal\Annotation;
+
+use Drupal\Component\Annotation\Plugin;
+
+/**
+ * Defines a field plugin annotation object.
+ *
+ * Field plugins are responsible for handling the migration of custom fields
+ * (provided by CCK in Drupal 6 and Field API in Drupal 7) to Drupal 8. They are
+ * allowed to alter fieldable entity migrations when these migrations are being
+ * generated, and can compute destination field types for individual fields
+ * during the actual migration process.
+ *
+ * Plugin Namespace: Plugin\migrate\field
+ *
+ * @Annotation
+ */
+class MigrateField extends Plugin {
+
+ /**
+ * @inheritdoc
+ */
+ public function __construct($values) {
+ parent::__construct($values);
+ // Provide default value for core property, in case it's missing.
+ if (empty($this->definition['core'])) {
+ $this->definition['core'] = [6];
+ }
+ }
+
+ /**
+ * The plugin ID.
+ *
+ * @var string
+ */
+ public $id;
+
+ /**
+ * Map of D6 and D7 field types to D8 field type plugin IDs.
+ *
+ * @var string[]
+ */
+ public $type_map = [];
+
+ /**
+ * The Drupal core version(s) this plugin applies to.
+ *
+ * @var int[]
+ */
+ public $core = [];
+
+}