Add a method to get the (normalized) template name from a XHTML\Template object.

This is useful when testing.

lib/SimpleSAML/XHTML/Template.php

@@ -142,6 +142,17 @@ class Template extends Response
     }
 
 
+    /**
+     * Get the normalized template name.
+     *
+     * @return string The name of the template to use.
+     */
+    public function getTemplateName()
+    {
+        return $this->normalizeTemplateName($this->template);
+    }
+
+
     /**
      * Normalize the name of the template to one of the possible alternatives.
      *