Merge branch '4.3' into 4.4

* 4.3:
  Fix more bad tests
  Fix test fixtures with deprecated method signatures.
  Fix 4.3 tests forward compat
  [Messenger] fix empty amqp body returned as false
  Fix routing cache broken when using generator_class

Author: nicolas-grekas

Tests/Authentication/AuthenticationTrustResolverTest.php

@@ -172,6 +172,10 @@ public function getRoles(): array
     {
     }
 
+    public function getRoleNames(): array
+    {
+    }
+
     public function getCredentials()
     {
     }