public function testSupports()
 {
     $this->assertTrue($this->generator->supports(''));
     $this->assertTrue($this->generator->supports(null));
     $this->assertTrue($this->generator->supports($this->contentDocument));
     $this->assertFalse($this->generator->supports($this));
 }
 /**
  * {@inheritdoc}
  */
 public function supports($name)
 {
     return parent::supports($name) || $this->isSyliusClassInstance($name);
 }