Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/phpunit/php-token-stream/tests/_fixture/source4.php

@@ -0,0 +1,30 @@
+<?php
+// Declare the interface 'iTemplate'
+interface iTemplate
+{
+    public function setVariable($name, $var);
+    public function
+        getHtml($template);
+}
+
+interface a
+{
+    public function foo();
+}
+
+interface b extends a
+{
+    public function baz(Baz $baz);
+}
+
+// short desc for class that implement a unique interface
+class c implements b
+{
+    public function foo()
+    {
+    }
+
+    public function baz(Baz $baz)
+    {
+    }
+}