Add source type set (MDSourceTypeSet)

l18n

@@ -1 +1 @@
-Subproject commit 9fb2ee21ac93cd883f326601b7e78eecad700582
+Subproject commit 6d52ec1208b27211957290d23c1b5432ce032f16

src/MDSourceTypeSet.php

@@ -0,0 +1,36 @@
+<?PHP
+/**
+ * Contains a class of available licenses.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * Class containing static functions for getting available licenses on md.
+ */
+final class MDSourceTypeSet extends MDValueSet {
+
+    const SOURCE_TYPES = [
+        'article',
+        'inbook',
+        'book',
+        'phdthesis',
+        'electronical',
+        'misc',
+    ];
+
+    /**
+     * Gets a sorted list of the entries in a translated version.
+     *
+     * @param MDTlLoader $tlLoader Translation loader.
+     *
+     * @return array<string>
+     */
+    public static function getSortedList(MDTlLoader $tlLoader):array {
+
+        return parent::getTlSortedList($tlLoader, self::SOURCE_TYPES, "source_type_set", "source_type_set");
+
+    }
+
+}