First draft

src/Enum/OaiSetspec.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enum;
+
+/**
+ * @todo Modify according to sets in DB or remove
+ */
+enum OaiSetspec: int
+{
+    case JournalArticles = 2;
+    case SupplementArticles = 5;
+    case SupplementBook = 6;
+    case Images = 8;
+    case Models = 9;
+}