MAGETWO-97961: Fixed incorrect email template rendering

Author: viktorpetryk

lib/internal/Magento/Framework/Filter/Template.php

@@ -324,7 +324,7 @@ protected function getParameters($value)
      * @return void
      * @throws \InvalidArgumentException
      */
-    private function validateVariableMethodCall($object, string $method)
+    private function validateVariableMethodCall($object, $method)
     {
         if ($object === $this) {
             if (in_array(mb_strtolower($method), $this->restrictedMethods)) {
@@ -343,7 +343,7 @@ private function validateVariableMethodCall($object, string $method)
      * @return bool
      * @throws \InvalidArgumentException
      */
-    private function isAllowedDataObjectMethod($object, string $method)
+    private function isAllowedDataObjectMethod($object, $method)
     {
         if ($object instanceof AbstractExtensibleModel || $object instanceof AbstractModel) {
             if (in_array(mb_strtolower($method), $this->restrictedMethods)) {

lib/internal/Magento/Framework/Filter/Test/Unit/TemplateTest.php

@@ -210,7 +210,7 @@ public function varDirectiveDataProvider()
      *
      * @return void
      */
-    public function testDisallowedMethods(string $method)
+    public function testDisallowedMethods($method)
     {
         $this->templateFilter->setVariables(['store' => $this->store]);
         $this->templateFilter->filter('{{var store.' . $method . '()}}');