Make getContents public to be able to use Twig templates for other things then...

Make getContents public to be able to use Twig templates for other things then web pages (i.e. mail templates)

lib/SimpleSAML/XHTML/Template.php

@@ -540,12 +540,14 @@ class Template extends Response
      * @return string The HTML rendered by this template, as a string.
      * @throws \Exception if the template cannot be found.
      */
-    protected function getContents(): string
+    public function getContents(): string
     {
         $this->twigDefaultContext();
+
         if ($this->controller) {
             $this->controller->display($this->data);
         }
+
         try {
             return $this->twig->render($this->twig_template, $this->data);
         } catch (RuntimeError $e) {