Fixed dumper error with DumperEvents class replaced by ReinstallEvents.

src/Dumper.php

@@ -15,7 +15,7 @@ use Symfony\Component\Yaml\Yaml;
 /**
  * Class Dumper provides export for content entities.
  *
- * @see \Drupal\reinstall\DumperEvents
+ * @see \Drupal\reinstall\ReinstallEvents
  */
 class Dumper {
 
@@ -196,13 +196,13 @@ class Dumper {
       foreach ($entities as $bundleName => $bundleEntities) {
         // Allow adding data to entities before exporting, like term parents.
         $eventPre = new DumperEvent($storage, $bundleName, $bundleEntities);
-        $this->eventDispatcher->dispatch(DumperEvents::PRE_DUMP, $eventPre);
+        $this->eventDispatcher->dispatch(ReinstallEvents::PRE_DUMP, $eventPre);
 
         $this->dumpEntities($entityTypeName, $bundleName, $bundleEntities);
 
         // Allow extra work after exporting, like copying files.
         $eventPost = new DumperEvent($storage, $bundleName, $bundleEntities);
-        $this->eventDispatcher->dispatch(DumperEvents::POST_DUMP, $eventPost);
+        $this->eventDispatcher->dispatch(ReinstallEvents::POST_DUMP, $eventPost);
       }
     }
     $this->accountSwitcher->switchBack();