Cleanup

exam/classes/Input/Input.php

@@ -6,6 +6,10 @@ use Khofmann\Request\Request;
 
 class Input
 {
+  private function __construct()
+  {
+  }
+
   public static function post(string $index, $defaultValue = null)
   {
     $value = Request::request()->getInputHandler()->post($index, $defaultValue);