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

vendor/symfony/dependency-injection/Tests/Fixtures/includes/classes.php

@@ -0,0 +1,61 @@
+<?php
+
+function sc_configure($instance)
+{
+    $instance->configure();
+}
+
+class BarClass
+{
+    protected $baz;
+    public $foo = 'foo';
+
+    public function setBaz(BazClass $baz)
+    {
+        $this->baz = $baz;
+    }
+
+    public function getBaz()
+    {
+        return $this->baz;
+    }
+}
+
+class BazClass
+{
+    protected $foo;
+
+    public function setFoo(Foo $foo)
+    {
+        $this->foo = $foo;
+    }
+
+    public function configure($instance)
+    {
+        $instance->configure();
+    }
+
+    public static function getInstance()
+    {
+        return new self();
+    }
+
+    public static function configureStatic($instance)
+    {
+        $instance->configure();
+    }
+
+    public static function configureStatic1()
+    {
+    }
+}
+
+class BarUserClass
+{
+    public $bar;
+
+    public function __construct(BarClass $bar)
+    {
+        $this->bar = $bar;
+    }
+}