Adding uuid field so that views work

google_api_client.install

@@ -82,3 +82,20 @@ function google_api_client_update_8002() {
   $entity_type = \Drupal::entityTypeManager()->getDefinition('google_api_service_client');
   \Drupal::entityDefinitionUpdateManager()->installEntityType($entity_type);
 }
+
+/**
+ * Create UUID field for Google Api Client.
+ */
+function google_api_client_update_8803() {
+  \Drupal::entityTypeManager()->clearCachedDefinitions();
+  $definition_manager = \Drupal::entityDefinitionUpdateManager();
+
+  // Create a new field definition.
+  $new_uuid_field = \Drupal\Core\Field\BaseFieldDefinition::create('uuid')
+    ->setLabel(t('UUID'))
+    ->setDescription(t('The Google Api Client UUID.'))
+    ->setReadOnly(TRUE);
+
+// Install the new definition.
+  $definition_manager->installFieldStorageDefinition('uuid', 'google_api_client', 'google_api_client', $new_uuid_field);
+}

src/Entity/GoogleApiClient.php

@@ -88,6 +88,7 @@ use Drupal\Component\Serialization\Json;
  *   fieldable = TRUE,
  *   entity_keys = {
  *     "id" = "id",
+ *     "uuid" = "uuid",
  *     "label" = "name",
  *     "owner" = "uid"
  *   },
@@ -352,6 +353,11 @@ class GoogleApiClient extends ContentEntityBase implements GoogleApiClientInterf
       ])
       ->setDisplayConfigurable('view', TRUE);
 
+    $fields['uuid'] = BaseFieldDefinition::create('uuid')
+      ->setLabel(t('UUID'))
+      ->setDescription(t('The Google Api Client UUID.'))
+      ->setReadOnly(TRUE);
+
     $fields['name'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Name'))
       ->setDescription(t('The name of the GoogleApiClient entity.'))