Refactored the code so that DifficultyDropdown

is not longer needed

lib/models/difficulty.dart

@@ -1,3 +1,5 @@
+import 'package:flutter/material.dart';
+
 class DifficultyUtil {
   /// Converts lowerCamelCase or UpperCamelCase enum-names to 'normal' Strings
   static String getName(Difficulty difficulty) {
@@ -6,6 +8,16 @@ class DifficultyUtil {
     name = name[0].toUpperCase() + name.substring(1);
     return name;
   }
+
+  static List<DropdownMenuEntry<Difficulty>> getDropdownList() {
+    return Difficulty.values
+        .map((value) => _toDropdownMenuEntry(value))
+        .toList();
+  }
+
+  static DropdownMenuEntry<Difficulty> _toDropdownMenuEntry(
+          Difficulty difficulty) =>
+      DropdownMenuEntry(value: difficulty, label: getName(difficulty));
 }
 
 // Only use camelCase or UpperCamelCase for names