Solves #298 (#299)

* Solves #298

Solves:

User Deprecated: The "doctrine.orm.default_entity_manager" service is private, getting it from the container is deprecated since Symfony 3.2 and will fail in 4.0. You should either make the service public, or stop using the container directly and use dependency injection instead.

This warning is caused by the JMSDIExtraBundle proxy replacing the Doctrine Service.
JMSDIExtraBundle, does not properly preserve the service visibility when overwriting the service.

* Compatibility with older SF versions

Method isPrivate don't exist in Symfony\Component\DependencyInjection\DefinitionDecorator in versions prior to 2.3

* Compatibility with older SF versions 

Method isPrivate don't exist in Symfony\Component\DependencyInjection\DefinitionDecorator in versions prior to 2.3

* Compatibility with older SF versions

Method isPrivate don't exist in Symfony\Component\DependencyInjection\DefinitionDecorator in versions prior to 2.3

DependencyInjection/Compiler/IntegrationPass.php

@@ -65,12 +65,16 @@ private function integrateWithDoctrine($container)
                 continue;
             }
 
+            $public = $definition->isPublic();
             $definition->setPublic(false);
+
             $container->setDefinition($id.'.delegate', $definition);
+
             $container->register($id, $container->getParameter('jms_di_extra.doctrine_integration.entity_manager.class'))
                 ->setFile($container->getParameter('jms_di_extra.doctrine_integration.entity_manager.file'))
                 ->addArgument(new Reference($id.'.delegate'))
-                ->addArgument(new Reference('service_container'));
+                ->addArgument(new Reference('service_container'))
+                ->setPublic($public);
         }
     }
 }