Added Event entity type.

src/OCEventListBuilder.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Drupal\opencase;
+
+use Drupal\Core\Config\Entity\ConfigEntityListBuilder;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * Provides a listing of Event entities.
+ */
+class OCEventListBuilder extends ConfigEntityListBuilder {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildHeader() {
+    $header['label'] = $this->t('Event');
+    $header['id'] = $this->t('Machine name');
+    return $header + parent::buildHeader();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildRow(EntityInterface $entity) {
+    $row['label'] = $entity->label();
+    $row['id'] = $entity->id();
+    // You probably want a few more properties here...
+    return $row + parent::buildRow($entity);
+  }
+
+}