diff --git a/src/Plugin/Field/FieldType/TypedResourceObjectItem.php b/src/Plugin/Field/FieldType/TypedResourceObjectItem.php
index cd89d908811c01d1343e810db67e87283e7f2a40..d7f63b18c9e81713d6a7cd83d76fcd5ee0a3d5f5 100644
--- a/src/Plugin/Field/FieldType/TypedResourceObjectItem.php
+++ b/src/Plugin/Field/FieldType/TypedResourceObjectItem.php
@@ -6,11 +6,8 @@ use Drupal\Core\Field\FieldDefinitionInterface;
 use Drupal\Core\Field\FieldItemBase;
 use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\Core\Form\FormStateInterface;
-use Drupal\Core\Session\AccountInterface;
 use Drupal\Core\StringTranslation\TranslatableMarkup;
 use Drupal\Core\TypedData\DataDefinition;
-use Drupal\Core\TypedData\OptionsProviderInterface;
-use Drupal\jsonapi_reference\JsonApiClientInterface;
 
 /**
  * Plugin implementation of the 'typed_resource_object' field type.
@@ -24,14 +21,7 @@ use Drupal\jsonapi_reference\JsonApiClientInterface;
  *   default_widget = "typed_resource_object_autocomplete"
  * )
  */
-class TypedResourceObjectItem extends FieldItemBase implements OptionsProviderInterface {
-
-  /**
-   * The JSON:API client service.
-   *
-   * @var \Drupal\jsonapi_reference\JsonApiClientInterface
-   */
-  protected $client;
+class TypedResourceObjectItem extends FieldItemBase {
 
   /**
    * {@inheritdoc}
@@ -99,7 +89,9 @@ class TypedResourceObjectItem extends FieldItemBase implements OptionsProviderIn
   public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data): array {
     $elements = [];
 
-    $types = $this->client()->listResourceObjectTypes();
+    /** @var \Drupal\jsonapi_reference\JsonApiClientInterface $client */
+    $client = \Drupal::service('jsonapi_reference.jsonapi_client');
+    $types = $client->listResourceObjectTypes();
 
     $elements['resource_object_type'] = [
       '#type' => 'select',
@@ -132,19 +124,6 @@ class TypedResourceObjectItem extends FieldItemBase implements OptionsProviderIn
     return $value === NULL || $value === '';
   }
 
-  /**
-   * Gets the JSON:API client service.
-   *
-   * @return \Drupal\jsonapi_reference\JsonApiClientInterface
-   */
-  protected function client(): JsonApiClientInterface {
-    if (!isset($this->client)) {
-      $this->client = \Drupal::service('jsonapi_reference.jsonapi_client');
-    }
-
-    return $this->client;
-  }
-
   /**
    * Automatically cast field to a string.
    *
@@ -159,43 +138,4 @@ class TypedResourceObjectItem extends FieldItemBase implements OptionsProviderIn
     return $this->get('value')->getValue();
   }
 
-  /**
-   * {@inheritdoc}
-   */
-  public function getPossibleValues(?AccountInterface $account = NULL): array {
-    return $this->getSettableValues($account);
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getPossibleOptions(?AccountInterface $account = NULL): array {
-    return $this->getSettableOptions($account);
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getSettableValues(?AccountInterface $account = NULL): array {
-    return array_keys($this->getSettableOptions($account));
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getSettableOptions(?AccountInterface $account = NULL): array {
-    $options = $this->client()->search(
-      $this->getSetting('resource_object_type'),
-      $this->getSetting('title_attribute'),
-      NULL
-    );
-
-    $return = [];
-    foreach ($options as $option) {
-      $return[$option[1]] = $option[0];
-    }
-
-    return $return;
-  }
-
 }