--- /dev/null
+<?php
+
+namespace Drupal\migrate_field_plugin_manager_test\Plugin\migrate\field;
+
+use Drupal\migrate_drupal\Plugin\migrate\field\FieldPluginBase;
+use Drupal\migrate\Plugin\MigrationInterface;
+
+/**
+ * @MigrateField(
+ * id = "d6_no_core_version_specified"
+ * )
+ */
+class D6NoCoreVersionSpecified extends FieldPluginBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getFieldFormatterMap() {
+ return [];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function processFieldValues(MigrationInterface $migration, $field_name, $data) {}
+
+}