2.nd Translation Entity with KnpLabs/DoctrineBehaviors not working - symfony

Question

I am using symfony 3 and trying to get the categories translated with mysql db. That's why I am using KnpLabs/DoctrineBehaviors, which should be the best for symfony.
I have done all like it is discribed in the documentation.
Category:
/**
* MdCategories
*
* #ORM\Table(name="md_category")
* #ORM\Entity(repositoryClass="AppBundle\Repository\CategoryRepository")
*/
class Category implements ORMBehaviors\Tree\NodeInterface, \ArrayAccess
{
use ORMBehaviors\Translatable\Translatable,
ORMBehaviors\Sortable\Sortable,
ORMBehaviors\Tree\Node;
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="NONE")
*/
protected $id;
CategoryTranslation:
/**
* #ORM\Table(name="md_category_translation")
* #ORM\Entity
*/
class CategoryTranslation
{
use ORMBehaviors\Translatable\Translation;
/**
* #var name
* #ORM\Column(type="string", length=120, nullable=false)
*/
protected $name;
/**
* #var route
*
* #ORM\Column(type="string", length=150)
*/
protected $route;
/**
* #var metaKey
*
* #ORM\Column(type="string", length=255)
*/
protected $metaKey;
/**
* #var metaTitle
*
* #ORM\Column(type="string", length=100)
*/
protected $metaTitle;
/**
* #var metaDescription
*
* #ORM\Column(type="string", length=120)
*/
protected $metaDescription;
/**
* #return name
*/
public function getName()
{
return $this->name;
}
/**
* #param name $name
* #return Categories
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* #return route
*/
public function getRoute()
{
return $this->route;
}
/**
* #param route $route
* #return Categories
*/
public function setRoute($route)
{
$this->route = $route;
return $this;
}
/**
* #return metaKey
*/
public function getMetaKey()
{
return $this->metaKey;
}
/**
* #param metaKey $metaKey
* #return Categories
*/
public function setMetaKey($metaKey)
{
$this->metaKey = $metaKey;
return $this;
}
/**
* #return metaTitle
*/
public function getMetaTitle()
{
return $this->metaTitle;
}
/**
* #param metaTitle $metaTitle
* #return Categories
*/
public function setMetaTitle($metaTitle)
{
$this->metaTitle = $metaTitle;
return $this;
}
/**
* #return metaDescription
*/
public function getMetaDescription()
{
return $this->metaDescription;
}
public function setMetaDescription($metaDescription)
{
$this->metaDescription = $metaDescription;
return $this;
}
public function __call($method, $arguments)
{
return $this->proxyCurrentLocaleTranslation($method, $arguments);
}
}
CategoryRepository:
class CategoryRepository extends EntityRepository
{
use ORMBehaviors\Tree\Tree;
}
config.yml:
knp_doctrine_behaviors:
translatable: true
tree: true
sortable: true
# All others behaviors are disabled
and registering the bundle
new Knp\DoctrineBehaviors\Bundle\DoctrineBehaviorsBundle(),
The databases are generated correctly
But how do I fill the categoryTranslation Data with the right local ?
$category = new Category;
$category->setCurrentLocale('de');
$category->setId(1); // tree nodes need an id to construct path.
$category->setName('Foobar');
$em->persist($category);
$em->flush();
This did not work !
I am surprised, that there is no KNP Translationsubscriber is listened in the subcribed events of symfony

Answer 1

Here is the solution.
$category = new Category;
$category->translate('de')->setName('Foobar');
$em->persist($category);
$category->mergeNewTranslations();
$em->flush();