Michael Strelan
--- a/core/lib/Drupal/Core/DependencyInjection/AutoSetupTrait.php 0 → 100644
+++ b/core/lib/Drupal/Core/DependencyInjection/AutoSetupTrait.php 0 → 100644
+    parent::setUp();
+    $class = new \ReflectionClass($this);
+    foreach ($class->getProperties() as $property) {
+      if ($property->isInitialized($this) || !$property->hasType()) {
+        continue;
+      }
+      $service = ltrim((string) $property->getType(), '?');
+      foreach ($property->getAttributes(Autowire::class) as $attribute) {
+        $service = (string) $attribute->newInstance()->value;
+      }
+
+      if (!$this->container->has($service)) {
+        throw new AutowiringFailedException($service, sprintf('Cannot autowire service "%s": property "$%s" of class "%s", you should configure its value explicitly.', $service, $property->getName(), static::class));
+      }
+
+      $property->setValue($this, $this->container->get($service));