Actualización

vendor/symfony/security-bundle/Tests/DependencyInjection/Fixtures/UserProvider/DummyProvider.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Symfony\Bundle\SecurityBundle\Tests\DependencyInjection\Fixtures\UserProvider;
+
+use Symfony\Bundle\SecurityBundle\DependencyInjection\Security\UserProvider\UserProviderFactoryInterface;
+use Symfony\Component\Config\Definition\Builder\NodeDefinition;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+class DummyProvider implements UserProviderFactoryInterface
+{
+    public function create(ContainerBuilder $container, $id, $config)
+    {
+    }
+
+    public function getKey()
+    {
+        return 'foo';
+    }
+
+    public function addConfiguration(NodeDefinition $node)
+    {
+    }
+}