--- /dev/null
+<?php
+
+namespace Drupal\field_test\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Plugin implementation of the 'test_field_widget_multilingual' widget.
+ *
+ * @FieldWidget(
+ * id = "test_field_widget_multilingual",
+ * label = @Translation("Test widget - multilingual"),
+ * field_types = {
+ * "test_field",
+ * },
+ * )
+ */
+class TestFieldWidgetMultilingual extends TestFieldWidget {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function form(FieldItemListInterface $items, array &$form, FormStateInterface $form_state, $get_delta = NULL) {
+ $elements = parent::form($items, $form, $form_state, $get_delta);
+ $elements['#multilingual'] = TRUE;
+ return $elements;
+ }
+
+}