--- /dev/null
+<?php
+
+namespace Drupal\field_test\Plugin\Field\FieldType;
+
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
+use Drupal\Core\Field\PreconfiguredFieldUiOptionsInterface;
+
+/**
+ * Defines the 'test_field_with_preconfigured_options' entity field item.
+ *
+ * @FieldType(
+ * id = "test_field_with_preconfigured_options",
+ * label = @Translation("Test field with preconfigured options"),
+ * description = @Translation("Dummy field type used for tests."),
+ * default_widget = "test_field_widget",
+ * default_formatter = "field_test_default"
+ * )
+ */
+class TestItemWithPreconfiguredOptions extends TestItem implements PreconfiguredFieldUiOptionsInterface {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function getPreconfiguredOptions() {
+ return [
+ 'custom_options' => [
+ 'label' => t('All custom options'),
+ 'category' => t('Custom category'),
+ 'field_storage_config' => [
+ 'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
+ 'settings' => [
+ 'test_field_storage_setting' => 'preconfigured_storage_setting'
+ ],
+ ],
+ 'field_config' => [
+ 'required' => TRUE,
+ 'settings' => [
+ 'test_field_setting' => 'preconfigured_field_setting',
+ ],
+ ],
+ 'entity_form_display' => [
+ 'type' => 'test_field_widget_multiple',
+ ],
+ 'entity_view_display' => [
+ 'type' => 'field_test_multiple',
+ ],
+ ],
+ ];
+ }
+
+}