Add value sets for event / appointment status, attendance mode, and appointment and

exhibition contributor roles

src/MDAppointmentContributorsSet.php

@@ -0,0 +1,31 @@
+<?PHP
+/**
+ * Contains a class for controlling the list of available contributor types
+ * to appointment / event.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * Class containing available contributor roles.
+ */
+final class MDAppointmentContributorsSet extends MDValueSet {
+
+    const AVAILABLE_ROLES = [
+        'organizer',
+        'presenter',
+    ];
+
+    /**
+     * Gets a 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::AVAILABLE_ROLES, "appointment_contributor_roles", "appointment_contributor_roles");
+
+    }
+}